Cold-forged Chrome Vanadium steel socket. Hardened and tempered for added strength. Chrome plated in half chrome, half satin finish with knurled ring for extra grip with oily fingers. WallDrive® socket configuration. Lifetime guarantee*. Model No. S1216. Weight 0.07kg. Depth Standard. Drive 1/2""Sq. Material Chrome Vanadium. Nett Weight 0.07kg. Size 16mm.