The Intermountain HO ACF 3 Bay Hopper Zoo Line No. 75117 Weathered is a ready-to-go pre-built model train freight car in HO gauge. Manufactured by InterMountain, this Canadian National branded hopper is made of plastic and metal materials. It features a detailed design and is suitable for ages 14 and up. The weathered appearance adds realism to the model, making it a great addition to any model railroad collection.