Borroughs 4" Caster Kit for Workbenches, Heavy-Duty, 14 Gauge Steel, Commercial Graded, Black (Pack of 4)

This thing is NICE. I only had 1 issue: the hardware was a bit cheap, one of the bolts was poorly threaded and would not go into the nut. Trying to force it to tap itself just stripped the threads off, a sign of poor metal or poor machining. Luckily I had a bolt of the same size in my own stock to replace it and complete the assembly.

I added these to my 72" x 34" Burroughs workbench. The mobility is awesome but the stability of the unit is less than desirable. If 2 of the casters would not pivot the workbench probably would be much better.