-Chuck type: push button type. -Bur Applicable: Ø1.59mm - Ø1.6mm x 21mm - 23mm. -The special clean head designed to avoid the entry of oral fluids and other impurity into handpiece head. -Cartridge passed the Germany dynamic balance machine test. -Single water spray, three air spray. -Ceramic bearing. **Excluding Delivery** **For further product information , please contact Chat support**