Angle Grinder Adapter Size - Female Thread Diameter: M14; Male Thread Diameter: M10; Total Length: 42mm; Drill Bit Adapter - Made of heat treated alloy steel for high hardness which ensures long service life. Thread Adapter Conversion Tool - Designed specifically to fit M10 thread grinder attachment (e.g. drill bit) to your M14 thread machine with this thread adapter. Grinder Machine Adapter Converter - Compatible with M14 thread handheld power tools such as angle grinder, grinder saw, concrete angle grinder and wet polisher. Polisher Interface Attachment - Can be widely used with M10 thread diamond bit, masonry hole saw, profile wheels, cup wheels, wool polishing wheel disc, cut-off wheel and wood carving discs. 2Pcs Angle Grinder Adapter M14 Female to M10 Male Thread Adapters M14 to M10 Converter Extension Shank Grinding Machine Conversion Tool Attachment for Diamond Bits Polishing Pad Wheel Made of alloy steel with the most advanced technology, it has excellent durability to ensure