Chrome Molybdenum, drop-forged, deep WallDrive impact socket. Hardened and tempered for added strength, with phosphate finish for greater corrosion resistance. Ideal for use with air impact wrenches. Features: One of a comprehensive range of Premier Hand Tools, suitable for daily professional use Chrome Molybdenum, drop-forged, deep WallDrive impact socket Hardened and tempered for added strength, with a phosphate finish for greater corrosion resistance Ideal for use with air impact wrenches Lifetime guarantee* Specifications: Guarantee:Life Model Number: IS132D