Technical Parameter: DESCRIPTION: Push button type fibre optic high-speed handpiece, triple water spray,anti-retraction system, with quicj coupling SUPPLY AIR PRESSURE AT THE BACK END OF HP: 206-231 Kpa (2.1-2.35 kgf / cm2) SUPPLY AIR PRESSURE AT THE GANGE IN THE DENTAL UNIT: 241-275 Kpa (2.45-2.8 kgf / cm2) WATER SUPPLY: 2kg ROTATION SPEED: 330000~420000 rpm HEAD HIGHT: 12.8 mm HEAD DIAMETRE: φ12.5 CHUCK TYPE: Push button type Description: BUR APPLICABLE: φ1.59mm~φ1.6mm×21mm~23mm (diameter×length) NOISE: 65~69dB Intensity of the light: 25000 lx Lifespan of the blub: 100,000 hours Source of light: Nature light