The Athearn ATH71004 HO Scale RTR 50' FMC Ex-Post Combo Box RBOX #50054 is a great addition to your layout. It comes fully assembled, so you can start using it right away. The model features machined metal wheels with RP25 contours, which work on all popular track brands. Replacement parts are available if needed. The window packaging allows for easy viewing, and the interior plastic blister keeps the model safe for storage. All 3 - packs have unique road numbers. It has separately applied wire grab irons and etched end platforms, and is weighted for smooth operation. Body - mounted McHenry operating scale knuckle couplers are included, and it has a minimum radius of 18 inches.

Using this Athearn model is easy. Since it's fully assembled, you can just place it on your layout and start running it. Make sure the track you use is one of the popular brands as the wheels are designed for them. When storing, keep it in the window packaging with the plastic blister for safety. If you notice any parts getting worn out, replacement parts are available. When moving the model, handle it gently to avoid damaging the separately applied wire grab irons and etched end platforms. Periodically check the knuckle couplers to ensure they're working properly. Also, don't use it on tracks with a radius less than 18 inches to prevent any operational issues.