Grip-Ring Allen Hex Drivers

[Ralf11]

Ko-ken has these but only in 3/8" drive.

It seems to me that the smaller fasteners are the ones that really need to be stuck on the driver.

I see Wiha and Wera both have L-keys with a grip ring or a ball detention device.

Anybody know of 4 to 5 mm ones in 1/4" drive?

 

[Monte]

maybe this:
https://bondhus.com/pages/hex-end3

 

[jptbay]

Wera has 3-8 mm in short and long 1/4" drive with holding function.

https://products.wera.de/en/zyklop_ratchets_and_accessories_the_zyklop_ratchets_the_zyklop_ratchets_1_4_zyklop_accessories_1_4_8740_a_hf.html

 

[Fedwrench]

The only thing I thought about not having grip ring in 1/4 drive sizes is that, cutting the groove for the grip-ring might weaken the bit too much that it shears under load.