Expanded weight distribution prevents tracks from being pressed into carpeting. Ball bearing pivot points provide smooth wheel rotation. Durable nylon. Large (over 2" dia.) casters have a 250 lb. load rating. Medium (2" dia.) casters have a 90 lb. rating per unit. Small (1-9/16" dia.) casters have a 110 lb. rating per unit.
Locking casters feature a gear-type positive locking mechanism that is far superior to the usual friction method. Screws included with all plate-mounted casters, except #34396 and #34387.
Casters with 90 lb. and 110 lb. rating are sold in packs of four. The 250 lb casters (#34396 and #34387) are sold separately.
