Makita MAC2400 Big Bore 2.5 HP Portable Air Compressor: The Makita MAC2400 Big Bore 2.5 HP Twin Stack Air Compressor features a reduced noise emitting motor, a low 1720 RPM rating with a heavy-duty intake air filter system. This Makita portable air compressor operates on only 12.3 amps and delivers 4.2 CFM at 90 PSI. The lever-handled ball valve draining system is designed to prevent the build up of condensation in the tank. Moreover, the finned discharge tubing is designed to increase heat di