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 Manufactured from heat treated chrome-molybdenum steel. Blackened phosphate coating protects against corrosion. Ideal for use with air tools. Complete with handy carrying case for quick and easy storage.