Wera 05071076001 3840/1 TS Stainless Steel Hex Socket Insert Bit is a high quality bit made out of stainless steel for hexagon socket screws. Wera 3840/1 TS Stainless Steel Bits are made out of stainless steel which prevents the formation of unsightly extraneous rust. The Hex-Plus profile offers a greater contact surface in the head of the screw.
The notching effect is therefore reduced to a minimum and damage to the screw head more or less eliminated. Come with Torsion zone: Torsion bits take-up torque peaks and absorb them in the Torsion zone. This prevents premature wear and extends the service life of the bit. 1/4'' hexagon, suitable for holders as per DIN ISO 1173-D 6.3.