The COMBI-PORT PREMIUM provides an easy and comfortable practice outside your dental clinic as well. The compact and mobile treatment unit comes in single trolley and is easy to carry like a suitcase to your next treatment location. The high speed compressor ensures consistent work through out, with an extremely quiet operation (48 dB). COMBI-PORT PREMIUM features three-way-syringe (air/water/spray), 3 instrument hoses (automatic), 1 liter spray tank, 1 liter suction fluid container with automatic overflow protection. It also includes each instrument with spray adjustment regulators, pressure regulator-filter with hose (6 x 4 mm) to air source, HVE (High Volume Evacuation) vacuum suction hose (adapter for saliva ejector tips and oral-dry-cup). The self contained clean water system is used for the syringe and instruments (check valve prevents against back flow of water coolant)