Crontra Angle Handpiece: - Low Speed 22,000-27,000 rpm. - The shank of the instrument mounted therein is 2.35 mm - Fastening of the instruments with a turning latch -Chuck Type:Wrench - Autoclavable 135°C - For any lab or E-type motors Packing List: - Contra Angle handpiece 1PC /////////////////////////////////////////////// Dental Diamond Burs Cups Composite Polishing Kit for Low Speed Handpiece RA0309 Specification: Kit Profile:3 ceramic polishers and 6 silicone rubber polishers 1. Ceramic White pointed polisher 2. Ceramic White cone polisher 3. Ceramic White ball polisher 4. Silicone Pink cup-shaped polisher 5. Silicone Pink knife wheel polisher 6. Silicone Pink pointed polisher 7. Silicone Light blue cup-shaped polisher 8. Silicone Light blue knife wheel polisher 9. Silicone Light blue pointed polisher Followed is the specific steps. (Note: Each step should be used at the recommended speed.) First, adjust the nose to recommended speed, the polishers should be in the best condition and can achieve the best polishing effect.First step: recommended speed:15000-20000; According to different parts.you can choose 1, 2 and 3 different shape polishers for rough polishing the surface.Second step: recommended speed:15000; According to different parts.you can choose 4, 5 and 6 different shape polishers for fine polishing.Third step: recommended speed:15000; According to different parts,you can choose 7, 8 and 9 different shape polishers for super-fine polishing. Package List: 9Pcs/Box