The Wera BiTorsion Diamond Bits have a significantly extended service life and prevent damaging cam-out. Ideal for use with screws into high resistant materials such as hardwoods and ABS plastic and self-tapping screws. Use with all combi and drill drivers. For impact tools, use Impaktor bits. Use with Wera BiTorsion Rapidaptor bit holder for ultimate service life. Blade Thickness: 1.0mm. Size: Slotted 5.5 mm x 25 mm x 1.0 mm Thickness.