A larger L-handle by Facom (K.130A) showed up in a search lately, although it doesn't seem to be in their online catalog (which is probably why I didn't notice it before). That's 3/4" double drive, and 540mm long (21-1/4"). This is somewhat long for that type, but still seems a little short to me, compared to torque wrench lengths in the same drive size, because you'd have to extend it to more than double its length to get the same leverage, and connecting an extension there would put more force on that part than if it were a longer handle extended another foot, for instance. There only seem to be ells about 30" long, which are not double ended, I'm not sure if 1" drives get longer, but saw a 30" single-ended handle on one of those too. Maybe they are not meant to be torqued on as much in larger drive sizes, or so it would seem. I saw a post on a Subaru forum where someone stuck a 4-foot cheater on them and broke off the tips of two L-handles. That might break anything in 3/4" drive though, if you jumped up and down on it (maybe they were 1/2"). I'd guess that since the 1/2" extendable type can handle torque well enough when doubling the length, then the double ended type could work as well with an extension plugged in backwards (there's about the same amount of overlap in depth on either when extended). It puts more of a downward angle on the handle though with a square drive, so the longer the extension is, the less clearance it might have.
It
looks like the two that broke off didn't fail at the bend, but around the square drive (which is the thinnest part getting the highest torque, and apparently the bend doesn't weaken the bar significantly). As a general rule of thumb, I suppose they shouldn't be extended more than double length. They seem to be among the shortest standard handles in any drive size, for whatever reason (even though some are designed to be extended). Maybe that's about clearance with those having shorter handles, without a ratchet, where not a lot of leverage is necessary, or it could be for pounding on the shorter, thicker handle with a hammer (as mentioned earlier in this topic), except they don't have pounding surfaces like an anvil (I wouldn't want to gouge the knurling myself). Maybe an impact socket on a double drive type would be better for pounding on, or actually there are some "impact" L-handles out there (
somewhere).
I've just never found another use for it.
I'd think a ratchet adapter could make it more useful, I've seen each of those in auto parts stores (reasonably priced, while some adapters are much more). Supposedly the ratchet adapters can handle more torque by design, and something like those are built into flex handle breaker bars as well. I found some sliding T handles recently with built in ratchet adapters too, each are a little more compact and have less compound wobble when attached to a handle rather than the drive. They don't wobble when torqued on of course, but that still changes the angle a little or a lot, the more parts are attached (I tried linking more than one extension to an L, and it was noticeably bending downward because of that).
A rigid shaft
coupler could be best for extending a handle, but those are relatively expensive, compared to getting a larger tool in the first place. Since some of these tools are made with extendable handles that are hollow too, apparently that kind of pipe is considered to be strong and safe enough, when it is permanently attached or locks on, and is not extremely long. The advantage is still that it is more rigid, as a closely fitting round shaft than a square drive connection, at least in the intended direction of force. A disadvantage could be if it rotates around the connection (as a sliding T handle would), I haven't had a problem with that though (except I wouldn't rely on it to keep my balance, especially with both hands on there—so attaching an extension to the square drive could be better sometimes). I could probably file my own square drive at the other end of a 30" L handle, if necessary (not likely though, unless all else failed, and strangely even the 3/4" Draper with a sliding extension handle was 30" max). The Facom one appears to have an 8mm hole just behind the straight drive end, perhaps for pinning a round handle over the end otherwise. There might be an accessory attachment for that (K.140A flex drive, or something), except it seems the thing was discontinued, in favor of a straight bar that has pinned or detent ball to tube drive attachments.
Oddly enough, I also found a set that looks identical to the King Tony extendable L, and T handles, except rebranded in all black and shipped within Finland only (that's a first). Oh, I'm not looking for this stuff in particular, it's just that I get more obscure foreign results than anything. I think there needs to be a
Toogle search engine designed to sort such things out... yes, so the select few who are interested can find all L handles, or especially ones that are available (I've seen enough of the rest). The problem was that I had to look up several different combinations of names and measurements to locate any that were widely distributed, and most have migrated somewhere else (apart from the 1/2" lug nut special), so that's to be expected. Well, I didn't expect hand tools to be hard to come by at first, imagine if the same situation occurred with hammers... could be anything. So I found more
ratcheting hammers around here.

Okay, those would be the impact ell handles, then. Or should I say
hell handles? How about
h, e, double hockey sticks... didn't search for that one yet. Or actually I think this is what the Facom handle was simplified into, because there's also an L shaped attachment for the straight bar there (which could make it a double bâton de hockey, or should I say
hokey)... anyway, it consists of bars (
K.125A or K.126A), with adaptors (
K.200E fixed,
K.140A hinged, and
K.151B ratchet-ed). Yet it's still kind of short for a "truck range" handle, compared to a truck torque wrench. What the hell?

Something about a
highway... I might have guessed they'd be shorter for torque multipliers, but those most often take a smaller drive torque wrench. Maybe they're for smaller trucks, or suddenly have nothing to do with wheels (after they go beyond 1/2"). At least another phrase in the nomenclature has been debuted: "fixed".