Description: and . Also can grind marble, jade and other non-metallic materials. It can basically replace the small wheel, there is no dust pollution. Grinding efficiency is increased to 10 times better than manual files and petiolate wheels. Processing is and smoothness and can be all sorts of high-precision shape. Safe, reliable,long life and convenient to use.Specification: Material: Metal,Plastic Shank diameter: 3mm Detailed Size: Box L9.8cm(3.8") W6.5cm(2.5")Note:Please allow 1~3mm manual measurement error, thanks!Due to light and computer screen reflect, the true color might be little different from the photo showing.Package includes:10pcs* Dental Burrs（with box） 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.