Angle Grinder Adapter Size: Male Thread Diameter: M10; Female Thread Diameter: M14; Total Length: 42mm. Core Drill Adapter: Thread adapter is made of high carbon steel, which has strong bearing capacity and strength. Thread Adapter Conversion Tool: m14 to m10 adapter is designed specifically to adapt M10 thread grinder attachment (e.g. core drill) to your M14 thread machine with this thread adapter. Grinder Adapter: Compatible with M14 thread hand tools such as angle grinders, grinding wheels, concrete angle grinders and wet polishers. Polisher Interface Adapter: m14 to m10 motorcycle mirror adapter can be widely used with M10 diamond core drill bit, masonry hole saw, profile wheels, sanding wheels, wool polishing discs, grinding discs. chainsaw and wood carving discs.