Features 1??PORTABLE DESIGN: The 4 holes lab turbine machine is small, lightweight, portable, practical and convenient, so you can use it anywhere, anytime. 2??FULL FUNCTION: Our Portable 4 Hole lab turbine machine has all the functions of a dental chair and meets all the functions of regular use. 3??WITH AIR COMPRESSOR: Our lab turbine machine uses an air control system to operate with a practical air compressor. The machines are not electrically driven. 4??WARM TIPS: Please turn off the water and air sources after the machine finishes working to prevent excessive gas pressure explosion. 5??VALVE CONTROL: Once the control valve is adjusted to the 4kg system, the user does not need to adjust the valve if you need to use more than 3kg instrument to adjust. Specification Item Type: Lab Turbine Machine Material: Stainless Steel Control System: Air control system (working with air compressor) Pressure Range: 0.01mpa ~ 0.4mpa Air Pressure Input: Approx. 4 ~ 8kg / 8.8 ~ 17.6lb Air Pressure Output: Approx. 0 ~ 4kg / 0 ~ 8.8lb Water Pressure: 0.1 mpa to 0.25 mpa Package List 1 x Lab Turbine Machine 1 x Tube 1 x Water Bottle