3 handpiece automatic control3-way airwater syringeMaster onoff togglePressure adjustment for each handpieceEasy read pressure gaugeNon-retracting water coolant with adjustmentAsepsis handpiece tubingManual flex-arm system with friction brakeStandard disc foot controlUtility center assembly with master valves regulators7 umbilical tubing               to visit the S-3420 in our catalog               to visit the S-3420 in our Service Manual.