Here is an Athearn G22008 HO Scale Rock Island F-7A/B Diesel Locomotive Set #677/677B. These locomotives feature plastic construction, plastic trucks, porthole windows, operating knuckle couplers, operating headlights on the A Unit, a motor in both the A Unit and B Unit, and metal wheels and axles. This item has been graded per TCA standards C-8: Like New based on visual appearance. The instruction manual is included. The original box is included. Please check the photos for a detailed look at this item. Overall condition is Like New. Availability: Ships within 1 Business Day! Trainz Product Id: 12587884.