Features:Brand new and high quality.For rasping or filing wood.1/4-Inch shank fits all drills.Shank diameter:1/4 (6.35MM) Hex Shank.Material: High Speed Steel.Mini Rotary File Cutter Set.Suitable for: all kinds of wood; soft metal like aluminum， cuprum; most plastic.Ideal for Soft Metal/ Plastic/ Woodworking， Grinding， Carving， Polishing.Uses: fine carvings resin， plastic， porcelain， soft metal， stone， to white polished wood，jade， animal bones or angle and so on.Package Included:5pcs x Rotary Rasp FileNO Retail Box. Packed Safely in Bubble Bag.