Replaced the metal feet on a 4' x 20' dock installed as a seasonal system at my house. Quick and secure installation, made it easy to pull the dock over a 1' embankment drop off and out for secure winter storage. Easy to remove wheels after for more compact storage. Intending to leave the wheels on next season. Looks like they will hold up (tidal, salt water river usage) well along with the rest of the system.