Chrome Vanadium drop-forged WallDrive® impact socket. Hardened and tempered for added strength with phosphate finish for greater corrosion resistance. Ideal for use with air impact wrenches.16mm 1/2Sq Drive Impact Socket• Chrome Vanadium drop-forged WallDrive® impact socket. • Phosphate finish for greater corrosion resistance.• Ideal for use with air impact wrenches.• Lifetime guarantee*.• Model No. IS1216Model No: IS1216:Brand: Premier:Depth: Standard:Drive: 1/2Sq:Material: Chrome Vanadium:Nett Weight: 0.08kg:Size: 16mm:PTDSEAIS1216