This set features 9 stubby impact XZN Spline socket bits expertly crafted from chrome molybdenum for unmatched durability. They are fortified with a sleek black phosphate coating for enhanced protection. The set includes the following sizes: M4, M5, M6, M8 (19mm length, 1/4" drive), M10, M12, M14 (30mm length, 3/8" drive), and M16, M18 (38mm length, 1/2" drive). These bits are stubby style, made from Cr-Mo for superior strength, with mixed drives and a phosphate finish. They are supplied in an EVA holder.