- When pressure of air supply is 254 KPA , the speed of air motor is 18000 min(rpm) , the consuming amount of air is 42 NL/min. - When pressure of air supply is 294 KPA , the speed of air motor is 20000 min(rpm) , the consuming amount of air is 51 NL/min. - When pressure of air supply is 392 KPA , the speed of air motor is 22000 min(rpm) , the consuming amount of air is 72 NL/min. Kit contains : Contra angle handpiece. Straight handpiece . Air motor. **For further product information , please contact Chat Support**