Wera 05066470001 867/1 Z 1/4'' Hex Wedge Torx Insert Bits are high quality bits for recessed Torx screws. Wera 867/1 Z 1/4'' Hex Wedge Torx Insert Bits feature a conical design of the profile which means that a wedging effect is generated that holds the Torx screw securely on the bit. Wera 867/1 Z 1/4'' Hex Wedge Torx Insert Bits are tough and viscous for universal use and are suitable for holders as per DIN ISO 1173-D 6.3.