Dental led handpiece with push botton head, 

Technical parameter:
Description push button type high speed handpiece,  single water spray, .
Air pressure at the back end of HP 206~231 kpa (2.1~2.35 kgf/cm2)
Air pressure at the gauge in the dental unit 240-294 kpa (2.45-3.0 kgf/cm2)
Water pressure 198kpa (2 kg)
Rotation speed 300, 000-320, 000 rpm
Head hight 13.02 mm
Head diametre φ 12.5 mm
Chuck type push button
Bur applicable φ 1.59mm~φ 1.6mm× 21mm~23mm (diameter× Length)
Noise ≤ 70dB
Intensity of light 25000 lx
Source of light haloid bulb
Volt of bulb 3.0~3.2 V
Safety classification b type application part