With zinc-plated steel mounting plates and axles, strong nylon hubs, and tires made of tough, non-marring TPR (thermoplastic rubber), these are reliable light-duty casters. Slow-rolling bearings in the axle ensure smooth, controlled operation.
The casters are available in two versions: a fixed caster, and a swivel locking caster that rotates on a ball-bearing race and has a lever-operated brake mechanism that locks the wheel (but not the rotating base).
Each is 32mm in diameter and 44mm (1 3/4") tall. Load rating of 15kg (33 lb) per caster. #6 pan-head screws required (not included).