Push button chuck Borden 2hole or Midwest 4hole connection Triple spray NSK Quick coupling Bur dia.1.59-1.6mm #Speed 300,000-370,000rpm Newly hygiene surface coating Repeated Autoclavable at 叩 to 135℃ Operate at minimum air pressure 2.5kgf/c nr Large torque,Standard or Mini head optional It shall be sterilized before handpiece is used at the first time; sterilization temperature is 135℃ and last for 12 minutes. After using，Please follow the instruction to sterilize the handpiece： 1. Extract the bur from the handpiece，use the soft brush to clean the dirt and wash with disinfection of alcohol cotton. 2. Lubricate the handpiece，put two drops into air tube one time. 3. Wrap it with sterilization package and mark.