The HO Scale Athearn 4229 SOO Line Railroad GP35 Diesel Locomotive is a vintage model train engine with a 1:87 scale. It requires Rails to be added for assembly and is designed with Knuckle Style couplers. This locomotive is a collectible item for hobbyists and enthusiasts, featuring a Headlight and painted details in its original box from the Athearn brand. With analog control and DC power supply, this model operates but may be noisy as a typical older Athearn locomotive is. The locomotive is a representation of the Soo Line Railroad and is made of plastic and diecast materials, making it a unique addition to any model railroad collection.