Hamm's HD 8 and HD 10C tandem rollers mark the company's entry into the 3,307-pound market. The HD 8 has a drum width of 31 inches. The HD 10C ("C" is for "compact") has a drum width of 39 inches. In both machines, the drums are suspended from one side and offset by approximately 2 inches. This configuration extends the working width to allow the machines to work up close to walls and other obstacles. The machines feature a low center of gravity, a height of 7 feet (with ROPS) and power rating of 22 horsepower.