The wbd weibida leveling casters come in a set of four with associated bolts and washers. The lift lever is attached to each caster for easy leveling.
These are much better than expected. They work well, and seem stable and rugged. They are easy to install and easier to use. These perform beyond expectations!
Don't misunderstand the capacity. The ability with a few clicks of the adjuster to transfer from a stationery bench to totally portable is great. Needed a great easy to use locking in place caster for my home built flight simulator chair.
These support the bench well, roll easily, and are easily adjusted. My 8'x3' work bench rolls easily across the garage. Bought 4 of these for my very heavy and large table and chop saw bench. These casters are installed on my workbench.
It's a great idea and has solved my particular need for both rolling something heavy and fixing it solidly in one place. They roll across the concrete floor of my shop like butter across a hot skillet! The ratchet action is awesome.
There's no neutral in the ratchet gear that allows you to safely move the structure. Bolt that can fit through the holes are a bit fragile for casters with this weight limit.
The wheels turn so easily that the workbench will start rolling on its own on my relatively flat garage floor. The table rolls smoothly and the tires are big and soft. It weighs about 500 lbs and theses work great for moving it around.
Caster locks work perfectly, easy to engage and disengage with my foot. Wheels lock individually and i only need to lock 2 to stabilize the table. The one thing i will say is they lock easy but to unlock is harder.
Worked perfectly in my new welding table. The work bench is 4x8 with drawers, power tools, vise. Using on a wood shop cart with a planer on top.
I believe they would pretty quickly deteriorate.