The trailer is custom built I do have the factory build sheet. There are two 5000lbs torsion axels underneath there is a full galvanized underbelly double enforced tongue. electric jack. 4 custom rims and tires a 36 inch side door RV lock and bar lock. Walk on roof fully insulated all frame work 12 on center including the floor trailer was built to last forever I designed it and had it built by the best in the industry the drop down door is strong enough to hold a full size truck. Heavy duty breaks. Heavy duty trailer hitch 2 1/4. Inside all done on white all is insulated. There are 3 recepticalls one light switch two lights inside two roof vents one is powered. Theres a dry cell battery inside and a built in charger which charges the battery while the trailer is hooked to a vehicle the battery runs the lights and hitch and roof vents when the trailer is not plugged in to a vehicle. There is a 50 amp breaker box and a 50 foot life line cord which attaches to an outside plug to hook up power. There is a cargo strap and wall system inside for strapping stuff to the wall. All led lighting outside. The work bench is sturdy and has an aluminum top the top cabinets are also very tough. The drop down door is all diamond plate. The trailer is 8 foot inside height no hitting your head. The trailer will last forever the cabinets can be removed and any car can be hailed anywhere in the trailer. It can handle anything for a long time. I have the title all paperwork build sheet etc. there is a safety breakaway break and solid brakes on the trailer.