oumuik 10Pcs Spline Socket Set M4 M18 Torx Bit Triple Square with Storage Case

10-piece internal serration bit set in a case for storage 1/4 inch size: M4, M5, M6 multi-tooth sockets 3/8 inch size: M8, M9, M10, M12, M14 multi-tooth socket spanner set 1/2 inch size: M16 M18 multi-tooth nut Material: the nuts are chrome vanadium steel, Weight: 0.4850169764 Pounds, Manufacturer: oumuik