Knipex 5 piece double edge broken bolt extractor set vs traditional EZ Outs?

[1982fxr]

Fitst time I saw these. Thoughts or experiences?

 

[KnurledNut]

No experience with them but they are made by Rennsteig.
https://www.rennsteig.com/en/products/detail/4719013SB.html

They became an independent subsidiary of Knipex in 1991.

 

[Wamsutta]

The Proto version is the best from my experience.

 

[1982fxr]

The Proto version is the best from my experience.

Proto version of this style, or just Proto version of another extractor style?

 

[Steve_P]

Project Farm did an extractor test FWIW.

 

[Wamsutta]

Proto version of this style, or just Proto version of another extractor style?

A picture is worth a thousand words.

 

[Beerhippie]

A picture is worth a thousand words.

But not that picture.

 

[terrific]

A picture part number is worth a thousand words.

 

[Ohio Andy]

The KNIPEX Screw Extractor Double-Edged Set (9R 471 904 3)

KNIPEX Screw Extractor Set, Double-Edged, 5 Parts (9R4719043) | JB Tools https://share.google/u69jMMSuphbPsODwj

SKU: J9500B | Barcode: 662679531577
Proto J9500B 10 Piece Screw Extractor Set

https://toolup.com/products/proto-j9500b-10-piece-screw-extractor-set

I don't own any of those, but I do own the RIDGID 35585 No. 10 Screw Extractor Set, 1/4" to 1/2" Broken Screw Extractor

https://toolup.com/products/ridgid-35585-no-10-screw-extractor-set-1-4-to-1-2-broken-screw-extractor

G-FORS Extractor Set - 14-PC
SKU: BBX14S

https://www.gripedgetools.com/products/14pc-g-fors-extractor-set

Some old Craftsman and some standard twist versions inherited from my grandfather.

 

[Callelle]

A couple things I've read about the Rennsteigs, in Matco flavor, like any extractor, they can work but for the most part ****.

Extractor wise, left hand drill bits and the square wedge ones have worked the best for me, but nothing tops a little metallic glue applied with electricity.