This is the trailer I used for multiple drag weeks. It is 40x50, 1" steel box frame, skinned on outside with aluminum, inside with wood. Upgraded tongue, with trailer wheels and 13" tires, wheels with grease bearing fittings. Also has a full slide out tray with support. Two hangers for slicks one on front one on side, top rack with supports for wheeler bars or other round stock also. Has a 12" spare (was one of the original tires). Aluminum door back door can be padlocked to prevent parking lot tool theft.