A comprehensive set of 14 bits manufactured from chrome vanadium steel hardened and tempered with a shot blast finish bit holder with quick release collet allows bits to be expelled quickly and efficiently supplied in a heavy duty storage case with plastic inlay to hold bits securely pz type products are compatible with pozidrivsupadriv fixing systems draper tx star products are compatible with torx fixing systems pozidrivsupadriv are registered trademarks of trifast plctorx is the registe