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. S3808 Weight 0.03kg Drive: 3/8""Sq, Material: Chrome Vanadium, Nett Weight: 0.02kg, Size: 8mm.