Ko-ken 12-sided socket, 20mm across, 9.5mm drive, 31mm overall length, 3405M-20, 1 pc

Catalog number: 3405M-20 Features: ●The opening (12-sided) that contacts the bolt/nut, as well as the square drive part on the insertion side, uses a surface-contact flat drive that reliably transmits high torque without damaging the corners. Specifications: ●Face size (mm): 20 ●Drive socket size (mm): 9.5 ●Total length (mm): 31 ●Face shape: 12-sided ●Face size (mm): 20 Material/Finish: ●Chrome molybdenum steel (SCM435)