All air inlet and outlet connections are through quick-disconnect fittings. Compatible with all GRS Standard Handpieces and every existing GraverMax or GraverMate handpiece. Two handpieces may be connected simultaneously and are engaged individually by the handpiece selector knob. A third, auxiliary outlet with its own shut-off selector switch is provided for use with air-driven rotary handpieces such as the GRS Ultra 850 Rotary handpiece or the GRS Air Pen . Requires 1.4 CFM of compressed air at @45 PSI minimum (40 liters per minute at 3 bar minimum). Measures 7.12” x 9.3″ x 6.3″ high. 100-240 volts, 50 / 60 cycles. Furnished with foot control, hoses, power cord, and air filter. A length of 1⁄4″ flexible tubing for the foot control is provided. Handpieces sold separately (see related products below). Each GRS Air System, including provided foot pedal, carries a full 2-year warranty covering parts and labor. Made in USA.