Wera Series 1 800/1 Z Set C SB Sheet Metal Bit Multipack, Slotted 0.6mm, 1.0mm And 1.2mm (Pack of 5) Features Wera's tough viscous design, for slotted screws, 0.6mm, 1.0mm and 1.2mm x 25mm blade For 1/4" hexagon bit holders and direct drives For Fein, Bosch, Holz-Her, Metabo, and Lecurex hexagon drives Wera Bits for hard materials (e.g. metal sheets or structures) prevent premature breakages of the tip, created by the large amounts of peak torque generate to the screw and bit Limited Lifetime Warranty, German Engineered