Master Caster Company Products - Casters, K Stem/S Wheel, Standard Neck, 3/8"x1", Black - Sold as 1 STSafety Casters provide an internal brake that prevents wheels from rolling freely when user stands up. Casters allow smooth effortless chair rolling while seated and feature dual 2" diameter wheels with full hoods. Soft wheels are designed for use on hard floors and chairmats. Weight rating is 100 lb. per caster.Sold as 1 STManufacturer: Master Caster CompanyTotal percentage of recycled content: 0Post Consumer Waste: 0Country of origin: DE