High quality bits with reduced shaft diameter for low-lying screw connections. Countersinking of screws without any surface damage. Come with rough ribs (anti cam-out feature, ACR) to prevent any slipping out of the screw head. Tough viscous for universal use. 1/4" hexagon, suitable for holders as per DIN ISO 1173-F 6.3.

Brand Name	Wera
Manufacturer Model No	853/4
Type	Screwdriver Bits
Drive	1/4" hexagon
Features	ACR (anti cam-out feature)