The diesel HHN ride-on trowel features a variable-speed clutch and a 34-hp rating. The clutch comes standard with a twin-nozzle retardant spray system, and the gearbox design eliminates gearbox overheating, according to the company. The trowel has five blades and a 4.4-gallon fuel-tank capacity. It finishes a path 91 inches wide. Options include a wheel kit for easy movement around the jobsite and a 31-hp gasoline engine.