Features: Used for machining surfaces, jewellery, handicrafts. for Ideal for ultra-fine grinding, engraving, polishing, etc.. Professional fittings drill angle grinder. The drill can meet the electric drill grinding, tiles cutting, wood and metal polishing. (Need to self-purchase grinding plate). Professional fittings drill angle mill, with it, as long as the drill can meet the electric drill grinding, cutting tiles, wood, metal polishing work (Self purchased cutting grinding plate). apply to all kinds of mold surfaces and cavity machining,polishing, jewelery and handicrafts more complex ultra-fine grinding,engraving, polishing, etc., in order to meet high customer demand for high quality. Good customer service Specifications: Material: Stainless Steel Inner Diameter of Disc Holder: Approx.10mm/0.39inch Outer Diameter of Disc Holder: Approx.30mm/1.18inch Length of Adaptor: Approx. 52mm/2.05inch Color:As Picture Shows Package Includes: 1 Set Mandrel Adaptor Disc Holder note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you place order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!