Item No.: H05C783
. 45# Carbon Steel  
. Heat treatment，black oxide finish  
. Raised panel  
. SAE size：1/4",5/16",3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4",13/16", 7/8", 15/16",1", 1-1/16", 1-1/8", 1-1/4"      
. Metric size：6, 8, 9,10,11,12,13,14,15,17,19,21,24,27,30,32MM