The D365 steam roller is constructed of all metal and brass. Complete with forward, reverse, and neutral control. Double-acting brass cylinder and piston, safety valve, steam regulator valve, real working steam whistle, and polished nickel brass boiler. Engine runs for approx. 15-20 minutes. Fired by solid fuel tablets. Measures 12 1/2"L x 5 3/4"W x 7 1/4'H. Weight is 3 lbs. 5 oz. If you are seeking a hobby, that special gift, or a unique collection, our complete line of steam models will give pleasure to young and old alike and will be treasured for life.