The swivel and wheel both have ball bearings. The locks work great to prevent this from rolling down the slope of the driveway.

Appears to be a quality product that is very usable. Highly recommend purchasing this product.

Made a cart for my generator. These appear to be strong and sturdy. Well built and feel sturdy.

They fit on my qsc ks118 powered subwoofer. These are great casters, especially for the price. These however are fantastic!

They hardly move with a 200 pound table on them. Had flat spots after mounting to a table weighing less than 100 lbs. Not at all happy with them.

Big wheels are nice, these roll and pivot well. They move very smoothly. Dual locking feature added bonus.