The Portal Pal is designed to assist in servicing your JHF portal hubs. Jack up your axle to the appropriate height, bolt on the Portal Pal, and roll your hub out of the way. This is a DIY kit that includes laser cut plates with tabs and slots. Minimal welding is required and can be final assembled in 10 minutes. The kit DOES NOT INCLUDE CASTERS. Four Harbor Freight 5"swivel casters are required to finish each kit (approximately $75 for a set of four after tax). Hardware is included.