DESCRIPTION: Standard head high-speed handpiece Screw type Single spray system SUPPLY AIR PRESSURE: 177-216 KPa (1.8-2.2 kgf / cm2) ROTATION SPEED: 380,000~420,000 r/min HEAD HIGHT: 13.1 mm HEAD DIAMETRE: Φ11.2 mm CHUCK TYPE: Screw type BUR APPLICABLE: φ1.59mm~φ1.6mm×21mm~23mm (diameter×length) NOISE: 65~69dB