18PCS: 6PCS OF SCREWDRIVER BITS, 1/4", LENGTH 37MM (T10, T15, T20, T25, T30, T40); 6PCS OF SOCKET BITS, 1/2", LENGTH 50M M (T30, T40, T45, T50, T55, T60); 6PCS OF SOCKET BITS, 1/2", LENGTH 100MM (T30, T40, T45, T50, T55, T60); DIN 3120 / AIS I S2, CRV6150, HRC 58-62, STAMPING LOGO, SIZE & MATERIAL