Item No.: H05C737
.Material：45# carbon steel  
.Mirror  polish ，heat treatment,chrome plated  
.Metric Sizes:10,12,13,14,15, 17,18,19,21,22,24,27,30,32mm  
.SAE sizes:3/8 in, 7/16 in, 1/2 in, 9/16 in, 5/8 in, 11/16 in, 3/4 in, 13/16 in, 7/8 in, 15/16 in, 1 in, 1-1/16 in, 1-1/8 in, 1-1/4 in.