Features: 100% brand new and high quality 45 steel material, blackened surface, rust proof treatment, more durable and wear-resistant. Used for grinding, polishing, shaping burnishing wood surfaces. 1/4 (6mm) shank suitable for most electric cordless drills. Includes 5 Popular Shapes: Ball, Oval, Cylinder, Large Cone, Small Cone. High quality long lasting rotary rasp set designed for shaping wood, plastics and light alloys. Package Includes: 10 Pieces Shank Wood Rasp Drill Bit/Set Specifications: Material: Steel Color:Black Handle Diameter: 0.63cm/0.25inches Total Length: 6cm/2.36inches note: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.