AAGUT 3" Heavy Duty Swivel Caster Wheels with 5/16"-18 Threaded Stem - 4 Pack TPR Dust Cover Casters for Carts, Furniture, Dolly, Trolley & Workbench - 150Lbs Capacity Each - Perfect for Warehouses, Garages & Industrial Use

I attached these to a 4' x 6' Rockler workbench that I typically have loaded down with 300+ pounds of equipment and materials, which was originally equipped with the static adjustable feet. I needed to be able to move the bench around in the workshop from time to time, so after looking at the threaded stem dimensions and the price of the Rockler locking casters for this bench, I decided to take a look around. These AAGUT caster wheels were exactly what I was looking for at a reasonable price, and after loading up the bench again and moving it around, these wheels have proven to be plenty sturdy and roll very easily. Most of the time, it's a matter of turning the table from one end only - the swivel action seems smooth, and more importantly (for me) the locking mechanism is easily moved in and out of position with my foot. The benchtop also feels sturdy without movement just as it did with the static feet.It comes with a very thin, flimsy-looking wrench - but don't toss it aside, it's a VERY handy tool that slips between a small gap of the table legs allowing a topside wrench or socket wrench to tighten the stem bolt from above. A quality set of swiveling, locking caster wheels that certainly made my workbench more usable!