Soft Rubber Swivel Square Stem Caster Set 2 Total Lock Brakes

Listing is for four (4) Service Caster Series #20 swivel casters, two (2) swivel & (2) swivel with total lock brakes, with a 4” diameter by 1-1/4” wide black soft rubber wheels and a 3/4" square stem. Supports a total weight of 800lbs (200lbs/caster).