1[Applicable Objects] Widely used in wood, steel, carbon steel, alloy steel, stainless steel, copper, aluminum and other metals, marble, stone, aggregates, etc. 2[Grinding Head Kit] The kit includes 5 different shapes of burr heads, which are suitable for various detailed work of woodworking, engraving and polishing. 3[High Hardness] This grinding files kit is made of high quality tungsten steel material, high hardness, wear resistance and corrosion resistance. 4[Rotating Grinding Burr] Easy to install and disassemble, incisive and durable, safe and reliable, very suitable for DIY enthusiasts or handicrafts and amateurs. 5[Plastic Box] With plastic storage boxes, this grinding burr kit is small and portable, easy to operate, suitable for woodworking and convenient for grinding. Item Type: Grinding Burr Material: Tungsten Steel + Plastic Weight: Approx. 130g / 4.6oz Product Handle Diameter: Approx.6mm / 0.24in Grinding Burr Maximum Diameter: Approx.8mm / 0.31in Scope of Application: Wood, metal, plastic polishing, etc. 5 x Grinding Burr 5 x Plastic Box 1. Please allow 0& 8209;1 inch error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-dadangjia