This small, very powerful metal gear kit is ideal for driving model railway locomotives in various scales. Whether a new model locomotive needs to be powered or a defective gear needs to be replaced, this metal gear fits perfectly even in the smallest models. Especially enthusiasts of smaller models, such as in 1:87 scale, will appreciate the optimal dimensions (30 mm long x 10 mm high x 8 mm wide including motor). This version is particularly suitable for flat models or when there is a clear view through the vehicle frame. With a very wide voltage range of 5 to 18 volts, the gear can be operated at any time with a railway transformer. Since the metal gear already exhibits a very high efficiency at 7.4 volts, it can also power battery-operated model locomotives at any time. The gear also shows its strengths in RC modeling. Whether as a vehicle drive or for other motor-driven auxiliary functions, the metal gear is perfectly usable in models scaled 1:43 or larger. It is a kit with detailed instructions, allowing the drive to be easily adapted to individual needs, such as a winch in ship modeling with a single-sided output shaft or an extended axle for a wider track.