This is a boat trailer I designed to haul the Traxxas Blast RC boat. It is 3D printed and comes in multiple pieces. There are assembly instructions included with the kit. It should take 30 minutes or less to assemble. All screws, nuts, axles, and wheels/tires needed are included to build a complete trailer. The dimensions of the trailer are roughly 8 inches wide x 3 inches tall x 24 inches long. The tire diameter is approximately 2.5 inches. A 3D printed hitch will also be provided with the kit, you just need a screw and a body clip to secure it to the truck and trailer. The hitch is designed to fit into a stock TRX4 bumper. Bumpers with a 6mm x 6mm hitch receiver should also work just fine with the hitch, but I cannot 100% guarantee. Feel free to reach out if you have any questions! Thanks for shopping!