Product parameter 1： 1" Medium Wind Gun 480 Fan blade: 45mm Cylinder: 180mm Torque: 2200-3800n.m Bolt: 40mm orless Speed regulation: 3 gears forward and reverse Weight: 7.8kg Applicable to: car suv , light truck, passenger car Matters needing attention: 1. The machine is highly precise, the speed is as high as 7000 RPM when running, any small sand, iron chips into the movement may lead to the impeller broken. So make sure the air inlet is clean and don't let