The product is a set of 2 Tyco HO Electric Power Packs Model Hobby Train Transformers, featuring a gold color and a scale of 1.87. Manufactured in 1970, these vintage transformers are made of steel and have an analog control system. They are compatible with traditional DC analog layouts and come from Hong Kong. These ready-to-go pre-built units are suitable for model railroads and trains, specifically designed for hobbyists aged 17 years and up. The power packs are of the brand TYCO and are of the model 899B & 899V, with a power supply of AC/DC.