Forged chrome vanadium steel. non-slip satin chrome plated for resistance to rust & peeling. Featuring Sure-drive sockets which apply torque to the flat of the nut rather than the corners to avoid rounding off. Strong steel storage case. Set contains: Sockets: 4, 4.5, 5, 5.5, 6, 7, 8, 9, 10, 11, 12, 13, 14 mm. Socket Bits: Hexagon 3, 4, 5, 6 mm. Tamper proof TX 8, 10 15, 20, 25, 27, 30, 40. PZD 1, 2, 3. Slotted 4, 5.5, 7 mm. Accessories: 50 mm. extension, 50 mm. extension/driver. Universal joint. Adapter, Reversible 45 tooth quick release ratchet.