Outwater's hooded universal office chair casters fit all office chairs that use universal stems. These casters are ideal for replacing broken wheels and are gusset reinforced assuring longevity. Utilized by furniture builders worldwide, Outwater casters install effortlessly into your office chairs without the use of special tools. The superb quality of the wheels with a dynamic rating per caster assures that your casters will not break when supporting your weight with their solid nylon construction. Being durable allows the wheels to roll with ease on carpeted or solid surfaces. The material and design prevents the wheels from scratching hardwood floors, laminated surfaces, and assures that your carpet fibres will not be pulled or snagged by the wheels. When replacing old casters, simply pull them out of the chair base and insert them in your new wheels.