This Atlas #220 HO 4 Switch Power Converter is a great addition to any model railroad enthusiast's collection. The pre-built unit is ready to go and has been well-maintained, ensuring its reliability. The converter is designed for use with HO gauge trains and has a scale of 1:87. The unit is manufactured in the United States and is suitable for ages 17 years and up. The black color and sleek design make it a stylish addition to any setup. This item falls under the categories of Other Parts & Accs, Parts & Accessories, Railroads & Trains, Model Railroads & Trains, and Toys & Hobbies.