This pump features two tool OSC™ “hot swappable” connections and two tool simultaneous use. The Mach III Mini Simo has two separate pumping circuits that operate independently. This pump is available with either a Honda gas engine Diesel, or a 220 VAC electric motor. The Mach III Mini Simo has our patented Overdrive feature. This feature allows one tool to be used at twice the speed by combining the flow from both pump circuits into one, giving that tool more power to cut or spread.