Expert Quality, metric bits manufactured from hardened and tempered S2 steel with a shot blasted finish. 1/2" square drive holder made from chrome vanadium steel hardened, tempered and chrome plated for corrosion resistance. Display packed. Contents: 1 x Bit holder 10mm x 1/2" sq. drive, 6 x 75mm hexagonal bits: 6, 7, 8, 9, 10, 12mm