Technical Parameter: DESCRIPTION: Standard head high-speed handpiece, Push button 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: 14.6 mm HEAD DIAMETRE: φ11.2mm CHUCK TYPE: Push button type Description: BUR APPLICABLE: φ1.59mm~φ1.6mm×21mm~23mm (diameter×length) NOISE: 65~69dB