The BlueSpot 8 Pce 1/2" Impact Hex Sockets (H5-H19) are manufactured from heat treated, tempered chrome-molybdenum steel for strength and durability. Blackened phosphate coating to protect against corrosion. Ideal for use with impact guns and high torque tools. Contains socket sizes: H5, H6 H8, H10, H12, H14, H17, H19. Complete with handy carrying case for quick and easy storage