'Forged from Chrome vanadium Steel with a black phosphate finish for corrosion protection.
Drop forged and heat treated. Specifications: 3/8" Drive. Deep Sockets 

Size:  7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19mm Single hex 6 point design.
Hole for accessory spring loaded ball and packed in blow moulded case for protection in transit.