The R36H5, R36H8, and R46H9 walk-behind power trowels combine enhanced comfort, increased durability, with money-saving maintenance features. The units feature vibration-dampening handles that permit increased running times without exceeding ISO standards. Powered by 5.5-, 8-, or 9-hp Honda engines, the rotors operate at 65-130 rpm. The machines weigh 194, 215, and 246 pounds, respectively. Rhin-O-Tuff Power Trowels. 888-574-4668.