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.4mm 1/4Sq Drive WallDrive® Socket• Cold-forged Chrome Vanadium steel socket.• Hardened and tempered for added strength.• Half satin and half polished finish with knurled ring for extra grip with oily fingers.• WallDrive® socket configuration. • Lifetime guarantee*.• Model No. S1404Model No: S1404:Brand: Premier:Depth: Standard:Drive: 1/4Sq:Material: Chrome Vanadium:Nett Weight: 0.01kg:Size: 4mm:PTDSEAS1404