1.Certificate: ZL 00 2 15328.9
2.heat treatment
3.L type with a hole,two ends socket in hexagon.

Raw Material: 45# quality carbon steel,40CrV alloy steel Heat Treatment: Auto Temperature Control,45#:HRC39-44;40CrV:HRC42-48 -44, 40CrV:HRC42-48 Certificate: ZL 00 2 15328.9 Size: 6mm-36mm Surface Treatment: fully polished,satin finished,chrome plated.Ni-Ni-Cr Style: normal,long neck Packaging: bulk,hanging card,color box