They are very sturdy and swivel easily and smoothly. I'm really impressed with how well they glide and maneuver. They're super low profile and glide wonderfully on concrete.

To lock isn't difficult, can't do it with your bare feet though. It is a little hard to unlock, but i just have my fiance do it. Dual locking system is the only way to go.

I have all my tools in my shop mounted on wheels and have never had a problem. Great for reasonably hard and smooth surfaces, but does not work well on bumpy surface due to its small wheels. If you need to roll island, these are the best wheels on ama...  Read More

This obviously makes the cart all but useless.

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.