Wera 05066638001 871/1 DC 1/4'' Hex Torq-Set Mplus Insert Bit are the stronger flanks - when compared with the conventional TORQ-SET profile - resulting in 70% more breaking torque and thereby enhanced durability whilst at the same time providing a perfect fit in the screw head.
The diamond coating of the bit ensures a secure fit in the screw, reduces the contact pressure required and lowers the risk of slipping. The Wera 871/1 DC 1/4'' Hex Torq-Set Mplus Insert Bit is suitable for holders as per DIN ISO 1173-D 6.3.