Socket (12-sided) 9.5 mm drive, 21 mm across, TS3-21W, 1 piece

The contact surface is large, so the bolt and nut are less likely to be damaged even when subjected to strong stress. Diagonal dimension (mm): 21 Insertion angle (mm): 9.5 Total length (mm): 30 Opposite side shape: 12-sided Surface treatment: Trivalent chromium plating Diagonal (mm): 21 Material/Finish: Chrome vanadium steel (Cr-V), trivalent chromium plating Country of Origin: Taiwan Code number: 416-1211