PRODUCT NAME: 1pc Adapter M14 male thread to 3/8 hexagon shank for M10 drill core bits grinding disc Specification: M14 male thread, 3/8" Hexagon Shank, shank length 28MM, total length 53MM Quantity: 1pc only Adapter Feature: Good quality steel, long life, and Surface Nickel plating M10 thread core bits can be fitted on hand drill or electric drill