General description These heavy-duty replacement chair caster wheels are designed for smooth and quiet rolling. With a stem diameter of 7/16 inch (11mm) and a stem length of 7/8 inch (22mm), they can support up to 500 lbs as a set of 5. Made from high-quality polyurethane, these wheels offer excellent mechanical strength, wear resistance, and shock absorption, ensuring a quiet operation without squeaks. Technical specifications Stem diameter: 7/16 inch (11mm) Stem length: 7/8 inch (22mm) Weight capacity: up to 500 lbs (set of 5) Wheel size: 2 inch (50mm) Material: Polyurethane (PU) Installation Installation is straightforward: simply pull out your old casters and plug in the new wheels. They are universally compatible with standard seating options such as work stools, office chairs, dining chairs, desk wheels, and tool carts. Usage These caster wheels are safe for use on various floor types, including hardwood, ceramic tile, wood, carpet, and cement, without causing scratches. They