This is a TT120 scale model kit of a British Railways Conflat-B wagon including the wagon body, a standard 12' chassis, two AFP containers and a sprue consisting of four NEM coupler pockets (two required and two spare) and four cosmetic drawbar hooks (two required and two spare) to fit to the headstock. The coupler pocket mounts should slide into the grooves in the underside of the chassis and be held there when the body is lightly glued onto the top of the chassis. All these parts are available separately but the combination kit may be more convenient and cheaper to order. I can upload a version with the wheels in too, if you get in touch and let me know, but I expect metal wheels will be nicer.