.Forged with heat treated chrome vanadium steel and each socket with corrosion-resistant black phosphate finish for anti-oil, anti-rust。

.6-point socket design enlarges contact surface between sockets and fasteners, locks force more firmly, reduces wear

.and prevents rounding off at corners

.Long-lasting laser etched size markings in each socket make it possible for quick and easy size selection even in the dim light。

.Designated slots in the case keep every piece in place and sockets don't fall off and slip. Sizes are also stamped beside each slot for identification。
.Size:15pc sockets :  10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24mm;3PCS extensions :  3" , 5" , 10".