Enjoy the thrills of this real working model steam engine. Has nickel plated brass boiler with water gauge glass. Oscillating brass piston and cylinder, spring loaded safety valve and a real working steam whistle. The flywheel has a grooved pulley so you can run accessories from it. Operates for approx. 15-20 minutes per fueling. Measures 8"L x 5 1/2"W x 8 1/2"H (including smoke stack).