High quality Low Speed Handpiece 1.One set:Straight handpeice. Air motor , Contra angle 2. Description :Screw type ,Low Speed Handpiece 1:1 Ratio,External cooling waterways 3. Air Pressure:2.5-3.0 kgf/cm) 4. Water Pressure: 198Kpa (2kg) 5. Rotation Speed: 18,000-21,000 rpm 6. Chuck Type: Latch Type 7. Bur Applicable: フ2.334-2.355mm 8. Noise: ÷70dB