New 12pcs Dental 2.35mm Polishing Burs SILICONE Polishers Diamond Teeth Jewel Polishers Great for noble metal, ceramics, resin and so on    Conducting smooth precise high-quality processing    Long life - durability is increased over 10 times longer than high speed steel cutting tools and over 200 times longer than wheels    Safe, reliable and easy to use    Total processing cost could be lowered down several times    Diameter 2.35mm    Granularity Grades: Extra Coarse(brown/gray) / Coarse(black) / Mid-Coarse(green) / Extra Fine(yellow)      Gray,Brown,black is used for Shaping,Green is used for Smoothing and Pre-polishing ,Yellow is used for fine-polishing.