Contra angle handpiece:

Low Speed 22,000-27,000 rpm.The shank of the instrument mounted therein is Fit CA 2.35mm BursFastening of the instruments with a turning latchAutoclavable 135°For any lab or E-type motors

Straight handpiece:

Working pressure: 0.3MPa (4-hole); 0.25MPa (2-hole)Revolution: about 20000r/minNoise: ≤68dBAir consumption: about 56L/minRatio: 1:1Max speed of straight head and contra angle: 40000rpm/min.

Air Motor 4/2Holes:

Best Price out of factory.E-type100% Brand New Packed Condition.High Performance; High Torque; Low Noise; Long life-span.Optional connect type: 4/2-Hole