Wholesale 6 Inch Kingpinless Rubber on Aluminum Wheel Caster Set

6 Inch Kingpinless Rubber on Aluminum Wheel Caster Set 4 Brakes 2 Swivel Locks. Listing is for a set of four (4) Service Caster Series #KP30 casters, two (2) swivel casters with side lock brakes & bolt-on swivel locks and two (2) swivel casters with a side lock brakes, with 6" diameter by 2" wide rubber on aluminum wheels capable of supporting a total weight of 2,200 lbs. (550 lbs./caster). When searching for a reliable and durable solution to your caster needs, consider Service Caster Series KP30 rubber on aluminum wheel casters. The Service Caster Series KP30 is ideal for material handling, carts, equipment, and shop projects. The rubber tread performs especially well on hard surfaces such as concrete, tile, and wood, while the aluminum core wheel stands up to heavier loads with a stable and secure roll.