Chunshop 105pcs Drill Bit Rotary Set Kit Grinding Sanding Engraving Polishing Hobby Tool Ideal for cutting, carving, sanding, grinding, cleaning and polishing This set includes 105 pc a mixture of the following: Polishing tools, pads, Cutting discs, drums, Gr Size: Shank Dia.:3mm or 1/8 inch Material: Plastic / Metal For use on rotary tools, Multi purpose diy assortment