3/8 inch Drive Socket, 6 pt, 21 mm, 637229 21

3/8 inch Drive Socket, 6 pt, 21 mm. Version: Forged from high quality steel- internally beveled for easy fitting to bolt heads. Internal square to DIN 3120. Close tolerance jaw sizes with HT drive profile protect corners of nuts and bolt heads. Thin walls for access to restricted places. Standard: DIN 3124 Material: Chrome vanadium steel- chrome-plated. Material: Chrome vanadium steel Dia drive output end: 27.9 mm Length: 29 mm