Dual axle trailer. Axle pivots as a real dual axle trailer does to keep all wheels on the ground regardless of tilt. Trailer features slide out ramp. Fits Heavyweights cab or Custom Fleetside with 5th wheel bet insert. If you want the insert I can offer that as a bonus goody. It does come with custom wheels which are easily removed if you want to place redline bearing wheels on the trailer. Wheels mat vary depending on inventory available but you can request a specific color rim and style. This is a custom 3d printed Item including the wheels. If a wheel does not move freely glue may have migrated down the axle. Hold onto axle tube and gently turn wheel until it frees up and spins.