This 1/2" square drive socket features a 16 mm wrench width and 17 mm depth, with a total length of 78 mm. It is suitable for fastening hexagonal nuts and compatible with impact screwdrivers, ensuring efficient torque transfer in demanding mechanical and industrial tasks. Key features: - Connection size: 1/2" square drive - Wrench width: 16 mm, depth: 17 mm - Length: 78 mm for extended reach - Surface protection: Other coating for durability - Impact screwdriver compatible for heavy-duty use