This Cir-Kit Concepts CK1009A 12 Volt 10 Watt Class 2 Plug-In Transformer is a great addition to any model railway enthusiast's collection. Its compact size of 1.5 inches in length, 2 inches in width, and 2.5 inches in height make it easy to transport and store. The transformer is made of high-quality plastic and has a circuit breaker protection feature to ensure your safety while using it. With analog control system and a voltage of 12V, the transformer is perfect for model railroads and trains that require a 1:87 scale and HO gauge. This item is suitable for serious collectors aged 17 years and above. The package includes one unit of the transformer, and it weighs 8.5 oz. Get this transformer with confidence and complete your collection of model railroads and trains.