Ko-ken 4-sided convex socket for drain plug, 9.5 mm drive, 5/16 inch across, 3110A-5/16, 1 pc

Catalog number: 3110A-5/16 Features: ● A 4-corner convex socket that can drive 4-corner concave shapes such as drain plugs. Specifications: ● Total length (mm): 28 ● Drive size (mm): 9.5 ● Opposite side size (inch): 5/16 Material/Finish: ● Chrome molybdenum steel (SCM435)