Power your #1 Gauge diesel or electric locomotives, railcars, or interurbans with the Super Magic Carpet motor drive unit. Easy to install, the single-axle unit slips into a truck just like a regular wheelset to convert an unpowered model into a self propelled unit. Power is supplied by a premium Sagami can motor, with precision manufactured NWSL gears and wheels for smooth operation. Unit will operate on any 12V DC power pack; exceeding 18V will shorten motor life. Specifications: 2224 size motor; 3/16" axle; 3mm journal; 40"/270 nickel-plated brass wheels.