- Chuck Type: Push Button type chuck. - Bur Applicable:2.345-2.355mm. - Spray: External irrigation system. - Provides sufficient force at low speed. - Ergonomic comfort grip. - 20:1 gear ratio. - 8.Max Speed：2,000 min-1. - 9.Max Torque：80 Ncm. **For further product information, please contact Chat Support**