- High speed handpiece: 3 way spray 3 air. - Chuck type: push button. - Bulb: LED light. - Noise: ≤70dB. - Air pressure at the back end of HP: - 0.25-0.28MPA(4hole). - 0.20-0.22MPA(2hole). - Bur applicable: Ø1.59-Ø1.6mmx21-23mm. - Rotation speed: ≥300,000rpm. **For further product information , please contact Chat Support**