*car tool *extension bar with 1/2" drive & length 5'' *drop forged & heat treated *tempered and hardened ... : heat treatment & drop forgedSize : Length 5'' ,1/2'' drivePackage detailcolor box ,40pcs in each box,4 boxes in each cartoncarton size : 24*16*20cmAdvantagesspecial ... has more than 20 years experience and good reputation in tools field in China , Looking to the future, our company will ...