Expert Quality, Draper TX - STAR® ; 10mm bits manufactured from silicon steel hardened and tempered with shot blast finish. 1/2" square drive bit holder made from chrome vanadium steel hardened, tempered and chrome plated for corrosion protection. Display packed. Contents: 1 x Bit holder 10mm x 1/2" sq. drive, 6 x Draper TX - STAR® ; bits: T20, T25, T30, T40, T45, T50 x 30mm long, 1 x Draper TX - STAR® ; bit: T55 x 75mm long Draper TX-STAR® ; products are compatible with †Torx fixing systems †Torx is the registered trademark of Acument Intellectual Properties LLC.