The Service Caster Series #20 is ideal for light and medium duty material handling, carts, equipment, and shop projects.
. Listing is for a set of four (4) Service Caster Series #20 swivel casters, four (4) swivel 3/8" threaded stem casters with total lock brakes, 4â diameter by 1-1/4â wide phenolic wheels.Not only are they resistant to water, oil, and grease, but because they are non-metallic, these wheels are spark proof, keeping you safely moving forward. The zinc plated finish provides durability under any condition, and the phenolic resin wheels are highly resistant to impact damage, providing protection for floors in commercial and industrial settings.