Features: - High-speed handpiece: 1-way spray. - Chuck type: push button/latch. - Noise: ≤68dB. - Bur Applicable: Ø1.59-Ø1.6mmx21-23mm. - Rotation speed: ≥300,000rpm. - High-speed handpiece 45 45-degree angle for an impacted tooth. - German dynamic balance imported bearing, long life, low noise, and stable.