This Rock Crusher measures out at 45 feet long from front to back, and is part 1 of two. The second part includes the catwalks and handrails. It is absolutely NOT necessary to have both, but the option for pre-made walkways is there should you want that. Creating your own using strip or sheet styrene etc would work just as well. This piece is based on a rig built in the early to mid-80''s, but by no means is it specific to that era only, as crushers in general are built to order in most cases using various elements per the client. The conveyor does not have a belt, as I felt it was better to have the builder do it using electrical tape, vinyl or even black sandpaper. THe frame and conveyor both had to be cut in half to be able to print due to the large size, but should easily glue together. Should there be a problem or question contact me via the designer link or via email to modelmechanic@gmail.com For the latest updates in what I offer, be sure and 'follow' me as a designer or bookmark my shop.