Forged Chrome Vanadium steel sockets with S2 steel hex bits. Sockets are heat treated and chrome plated with a fully polished mirror finish. Knurled rings assist the gripping of the sockets with oily fingers. Sizes: 3/8"Sq Drive (50mm) Socket Bits; Spline; M4, M5, M6, M8, M10, M12, TRX-Star*; T10, T15, T20, T25, T27, T30, T40, T45, T47, T50, Hex; 4, 5, 6, 7, 8, 10mm. Supplied in EVA tray. Lifetime guarantee*. Model No. AK6243