Built tough for convenient towing and jacking, the 800lb.-capacity Easy-Rolling Trailer Jack offers maximum performance and durability. The crank features an ergonomic handle for enhanced grip and smooth trailer lift. Quick-release bracket allows easy repositioning to raise trailer jack up and out of the way when not in use and while travelling on the road. Large 5 1/2" offset wheel provides quicker turning and easier rolling than conventional wheel mounts. Bolt-on mounting does not require welding.