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Tools of Japan

eas311

Active member
Joined
Nov 27, 2017
Messages
41
I believe you need a triple square, socket for newer bmw engines, not a simple hex. Someone will have more details
Ah yes, that's correct. Had the wrong part number. 12 point is actually 3305P and comes in 250mm length.

Some of the sites in Japanese reference BMW but I'm skeptical that it's thin enough

 
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JWC86

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Sep 4, 2021
Messages
270
I’m waiting on a 1/4 drive nepros that I plan to use mainly as a bit ratchet. I went back and forth between that and the zeal since that is one area where back drag is a big concern.

The German tool makers don’t seem to concern themselves at all with back drag.
The 1/4 versions are where the Nepro's really shine IMO. With 3/8 I'd have to say I use my Snap-on's and other more often but there is just something about that little 1/4 Nepros I love.
 

Samuel D

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Joined
Apr 9, 2019
Messages
638
I’m waiting on a 1/4 drive nepros that I plan to use mainly as a bit ratchet.
Which bit-holder adaptor do you plan to use for this? Many of the ones I’ve seen are clumsy to use. Too long, sloppy fit, or don’t hold the bit with the right strength.
 

bpwoodworking

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Joined
Jul 6, 2023
Messages
254
Which bit-holder adaptor do you plan to use for this? Many of the ones I’ve seen are clumsy to use. Too long, sloppy fit, or don’t hold the bit with the right strength.
I bought a KoKen bit holder, it appears to have a similar retaining setup as the nut grip sockets and looks pretty trim. I’ll find out next week when it arrives if it’s any good.

I have a 3/8 version from stahlwille with an internal spring style retainer ring that is excellent. Very trim, grips well but releases without needing pliers and the bits never accidentally pull out in use.

By contrast I have a 3/8 version from Wera that is good but it has a big sleeve around it for releasing the holding mechanism. That sleeve really adds a ton of size to it so it’s only useful when the fastener has a lot of access.
 

tamaraw

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Joined
Jun 6, 2022
Messages
843
I bought a KoKen bit holder, it appears to have a similar retaining setup as the nut grip sockets and looks pretty trim. I’ll find out next week when it arrives if it’s any good.

I have the 1/4" size (nut-grip style with a helical spring) as well as the 3/8" size (similar, but uses a flat spring steel band).

Both are pretty nice, reasonably slim, and grip bits securely with minimal play.

Obviously you loose a little vertical height vs a dedicated bit driver but that's the only real drawback imho.
 

mdrawde

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Joined
Apr 7, 2021
Messages
47
Location
New Zealand
I bought a KoKen bit holder, it appears to have a similar retaining setup as the nut grip sockets and looks pretty trim. I’ll find out next week when it arrives if it’s any good.

I have a 3/8 version from stahlwille with an internal spring style retainer ring that is excellent. Very trim, grips well but releases without needing pliers and the bits never accidentally pull out in use.
I found the 1/4" Ko-ken bit holder to not securely retain bits, often the bit would stay in the fastener, but it does make it easy to remove bits. If you use E6 bits, the Ko-ken will have no trouble compared to the Stahlwille, as the spring in the Stahlwille can get stuck in the groove of the bit. I think the 1/4" Proto bit holders are quite good, as well as the Stahlwille.
 
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1320

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Joined
Jan 3, 2018
Messages
903
Location
Arizona
Speaking of bit holders, I'm interested in knowing how the Koken E6 bit holders are regarded.

I have a Snap-on TMC109 and it works okay, but i dislike how the bits can move in and out a bit when locked into the adapter. It doesn't really affect anything, but it's kind of annoying for sucjph an expensive item.

I have the Koken 2137 1/4" drive C6 but holder and I like how low profile it is, though more bit retention would be nice.

I mostly use PB Swiss, Snap-on, and Milwaukee bits. I seem to remember something about Japanese bit standards being different than the rest of the world's.
 

bpwoodworking

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Joined
Jul 6, 2023
Messages
254
I have a KoKen quick release for E6 bits, it’s excellent. I have it on a 1/2” impact for running torx drive lags in and it doesn’t beat up the bit or cause it to jam into the holder.
 

cbracer

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Joined
Feb 27, 2012
Messages
640
Location
Costa Mesa, CA
I found the 1/4" Ko-ken bit holder to not securely retain bits,
Agreed. The wire spring clip seemed to be lacking any real force in the 1/4" bit holder by Koken. First Koken item I have been disappointed with. I returned it but kept the 3/8" bit holder because it works well. I ordered a Gedore 1/4 drive bit holder, so waiting for that to come in the mail.
 

superautobacs

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Joined
Oct 31, 2008
Messages
3,997
Location
Vancouver, BC
Has anyone successfully used a Koken spark plug socket like this on a modern BMW engine (B58, N55, etc)? It needs to be a thin wall, and according to the Koken catalog this has an OD of 19mm. Not sure if that is too large of a diameter

Koken model # 3300C.180-14

I would advise against getting that.

Take a look at that spark plug bore on a modern day BMW engine. Hard to pick up in picture, but that bore hole isn't a straight shot; it's slightly kinked.

<a data-flickr-embed="true" href=" https://flic.kr/p/2e16hrF
My advice is, if you're sticking to Ko-ken, just get the standard 12pt sparkplug socket and use a locking wobble extension or one of their universal ball-joints.

Here's two different 12pt 14mm sockets

https://flic.kr/p/2dCRdnc
<a data-flickr-embed="true" href=" https://flic.kr/p/Rv4bBh
<a data-flickr-embed="true" href=" https://flic.kr/p/PSJyXv
<a data-flickr-embed="true" href=" https://flic.kr/p/UN4dzc

Magnetic ring versus Spring clips

<a data-flickr-embed="true" href=" https://flic.kr/p/VmwRxZ

EDIT: its been too long since I've posted I don't remember how to link photos. :lol2:
 
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HannibalLecter

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Joined
Aug 26, 2023
Messages
402
If the dimensions are same between the sockets I believe the long specialty koken should work. It's not that the plug is behind a corner.
I torque my plugs with a torque wrench, so I like to use a single piece long specialty socket (from another brand, back then I didn't know koken) , I avoid using swivel joints because I can't get a feel where the start of the thread is and also they mess up the torque if they are misaligned. My experience is with the m54 though, not the b48-58-n55
 

Reed Prince

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Joined
May 30, 2017
Messages
593
Location
Northern Virginia USA
Agreed. The wire spring clip seemed to be lacking any real force in the 1/4" bit holder by Koken. First Koken item I have been disappointed with. I returned it but kept the 3/8" bit holder because it works well. I ordered a Gedore 1/4 drive bit holder, so waiting for that to come in the mail.
I've found that the spring clip on the Gedore can rotate around 180˚. This happened to me once and I didn't notice it at the time, When I put another bit into it later the ball bearing popped out.

IMG_9825.jpg
 
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Samuel D

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Apr 9, 2019
Messages
638
Have you tried the Hazel bit socket? They hold the bits VERY securely
Where is the Hazet made? I’m pretty sure the Gedore 620 shown above is not German.

Do any of the Japanese manufacturers besides Ko-ken make a notable 1/4″-1/4″ bit socket / holder / whatever you call these?

I’m looking for something short, slim, with solid bit retention, and without much bending play between bit and square drive – whichever side of the socket that play comes from.
 

eas311

Active member
Joined
Nov 27, 2017
Messages
41
Where is the Hazet made? I’m pretty sure the Gedore 620 shown above is not German.

Do any of the Japanese manufacturers besides Ko-ken make a notable 1/4″-1/4″ bit socket / holder / whatever you call these?

I’m looking for something short, slim, with solid bit retention, and without much bending play between bit and square drive – whichever side of the socket that play comes from.

I have both the Gedore 620 and Koken 2137. I don't really care for either as they don't hold bits very securely (but the Gedore does hold better than the Koken). As with all Koken, it has less play due to a better fit on the square end. The Gedore is also not made in Germany, it's made in Taiwan if I remember correctly.
 

superautobacs

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Joined
Oct 31, 2008
Messages
3,997
Location
Vancouver, BC
If the dimensions are same between the sockets I believe the long specialty koken should work. It's not that the plug is behind a corner.
I torque my plugs with a torque wrench, so I like to use a single piece long specialty socket (from another brand, back then I didn't know koken) , I avoid using swivel joints because I can't get a feel where the start of the thread is and also they mess up the torque if they are misaligned. My experience is with the m54 though, not the b48-58-n55
Interesting. I'm the opposite. I always use a swivel type spark plug socket or use a universal joint with a standard spark plug socket.
I'm not sure what you mean about messing up the torque if they are misaligned. I always torque new sparkplugs to seat them down properly.
 

HannibalLecter

Well-known member
Joined
Aug 26, 2023
Messages
402
Interesting. I'm the opposite. I always use a swivel type spark plug socket or use a universal joint with a standard spark plug socket.
I'm not sure what you mean about messing up the torque if they are misaligned. I always torque new sparkplugs to seat them down properly.
Well, if you are torquing with a swivel and it is at an angle ( misaligned) not all the torque is transmitted to the plug, some gets reacted sideways.
 

eas311

Active member
Joined
Nov 27, 2017
Messages
41
@superautobacs A cobbled this together from the toolbox, but not locking. Do you think the Koken locking extensions are worth the $$$?

(the black socket is from Burger Motorsports)
 

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tamaraw

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Jun 6, 2022
Messages
843
@superautobacs A cobbled this together from the toolbox, but not locking. Do you think the Koken locking extensions are worth the $$$?

(the black socket is from Burger Motorsports)
If you need the wobble, I would probably just get one of the one-piece Hazet wobble plug sockets with the built in extension and have something dedicated for the job.
 

rick carpenter

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Joined
Jan 20, 2011
Messages
3,786
Location
Huntsville, East Texas
I got these in this weekend, an 18mm Olfa L-5 and a bent nose Tsunoda FR-150. The Olfa feels decent in hand with the knob, not great, just decent. But I'm not at all worried about the blade feeling like it's going to pull out when it gets caught on rough cuts and not as concerned with premature snapulation as with my 9mm in the warehouse. I'm relegating it to the warehouse, keeping my SVR-2 for EDC office use, and will prolly get an auto-lock LA-X for the garage. The 'gap' at the bend on the FR-150s is due to the angle of the pic rather than any jaw surface defects. It is right at the bend which straddles the transition from the flat jaw section to the serrated jaw section. When the cutters fully engage, the tips touch... just as it should be.

image_50456833.JPG

EDIT: I've already used the L-5 in the warehouse and I'm quite pleased with it, but the LA-X I got in today sure feels more comfy in hand. It came with one regular silver blade rather than the ultra-sharp black blade of the L-5. A 10-pack of blades should be in tomorrow.

image_67158017.JPG
 

Dave455

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Joined
Mar 19, 2013
Messages
5,829
Location
Sussex, England
When I contribute to this forum, I’m always very conscious of national characteristics.

Americans, for example, generally try to be positive and supportive, of products produced by American companies. This is very patriotic, and refreshing, but can lead to problems. Remember when Coca Cola introduced a “new” recipe? All the focus groups had been saying “oh yeah, it’s really great”, then of course it bombed!

No risk of that in the U.K. If you produce a product that’s 97% perfect, everybody will “rip you a new one” for the 3% you screwed up!

I love Nepros, but where this is concerned I have to come over all British and ask “WHAT ARE THEY THINKING”?

When you use a tool, any tool, it needs to feel good. Rounded is good, corners are bad. Guys pay huge sums for gunsmiths to “de horn” their firearms - just smoothing the corners to make them nicer to use.

Nepros ratchets are beautiful in this regard. They go to immense trouble to make a hollow handle that can be totally rounded without affecting the balance. Then they bring out his “thing”. All the aesthetics of a bears ****, totally impractical gaps to trap fingers and grease, and they’ve gone out of their way to add some corners!

I love Japanese tools, and when they try to make western style tools, but better than many western manufacturers, they often succeed. Sometimes, however, their outlook is just too different, and you get a complete fail.

I’m sure some folks will buy this, it’s going to be rare for sure, but I won’t be one of them!
91F35DDB-AED8-445D-8439-77161E5C5912.jpeg
 

JohnKing

New member
Joined
Jul 25, 2023
Messages
4
Japanese tools are designed to become one with the user, an extension of your natural self, this is what makes them nice. USA, German, etc. tend to make tools a bit more brutish, focused on the fastener, less on the user. This is probably the reason why if you snap a Japanese ratchet, no warranty, you put abnormal (beyond human) force on it, cheater bar, etc.

Nepros design thought with the new ratchet .. note how it fits the hand. It does look "off" as ratchet shapes have been consistent for decades but my guess is that ratchet feels real nice in the hand.

nbr390x_7.jpg
 

tamaraw

Well-known member
Joined
Jun 6, 2022
Messages
843
When I contribute to this forum, I’m always very conscious of national characteristics.

Americans, for example, generally try to be positive and supportive, of products produced by American companies. This is very patriotic, and refreshing, but can lead to problems. Remember when Coca Cola introduced a “new” recipe? All the focus groups had been saying “oh yeah, it’s really great”, then of course it bombed!

No risk of that in the U.K. If you produce a product that’s 97% perfect, everybody will “rip you a new one” for the 3% you screwed up!

I love Nepros, but where this is concerned I have to come over all British and ask “WHAT ARE THEY THINKING”?

When you use a tool, any tool, it needs to feel good. Rounded is good, corners are bad. Guys pay huge sums for gunsmiths to “de horn” their firearms - just smoothing the corners to make them nicer to use.

Nepros ratchets are beautiful in this regard. They go to immense trouble to make a hollow handle that can be totally rounded without affecting the balance. Then they bring out his “thing”. All the aesthetics of a bears ****, totally impractical gaps to trap fingers and grease, and they’ve gone out of their way to add some corners!

I love Japanese tools, and when they try to make western style tools, but better than many western manufacturers, they often succeed. Sometimes, however, their outlook is just too different, and you get a complete fail.

I’m sure some folks will buy this, it’s going to be rare for sure, but I won’t be one of them!
91F35DDB-AED8-445D-8439-77161E5C5912.jpeg
I believe this is just an alternative option, not meant as a replacement by any means.

Bear in mind that Nepros also has expensive leather and lacquer handle ratchets for collection/display. Or the limited edition blue/black/gold models. These Next ratchets even come packaged with a big slab of machined cork rather than a cardboard insert.

Interestingly, I don't believe this one even says Nepros on it, just the Next branding. I believe the focus is on balance, futuristic look, and reduced weight. Possibly for collection, motorcycle market, use with gloves, etc. More of a "just because they can" type thing. The accompanying sockets with spline/knurling are neat too and a distinctly Japanese luxury.

As for the polarizing shape, the advertising totes "round shape that is easy on the hands" as a major feature, so maybe it feels different in person, idk.
 

Spongebob89

Well-known member
Joined
Jul 6, 2021
Messages
82
Location
Hellas
When I contribute to this forum, I’m always very conscious of national characteristics.

Americans, for example, generally try to be positive and supportive, of products produced by American companies. This is very patriotic, and refreshing, but can lead to problems. Remember when Coca Cola introduced a “new” recipe? All the focus groups had been saying “oh yeah, it’s really great”, then of course it bombed!

No risk of that in the U.K. If you produce a product that’s 97% perfect, everybody will “rip you a new one” for the 3% you screwed up!

I love Nepros, but where this is concerned I have to come over all British and ask “WHAT ARE THEY THINKING”?

When you use a tool, any tool, it needs to feel good. Rounded is good, corners are bad. Guys pay huge sums for gunsmiths to “de horn” their firearms - just smoothing the corners to make them nicer to use.

Nepros ratchets are beautiful in this regard. They go to immense trouble to make a hollow handle that can be totally rounded without affecting the balance. Then they bring out his “thing”. All the aesthetics of a bears ****, totally impractical gaps to trap fingers and grease, and they’ve gone out of their way to add some corners!

I love Japanese tools, and when they try to make western style tools, but better than many western manufacturers, they often succeed. Sometimes, however, their outlook is just too different, and you get a complete fail.

I’m sure some folks will buy this, it’s going to be rare for sure, but I won’t be one of them!
91F35DDB-AED8-445D-8439-77161E5C5912.jpeg

Do you find it on amazon or anyone else to buy it?
 
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