Product Introduction: : Specifications: Color: Black and White Material: Polyurethane and Metal Maximum Weight: 50kg Size: Wheel Diameter: 2" (50mm) Stem Diameter: 7/16" (11mm) Features: 1.Soft and Light Sound: This set of 5 chair wheels is perfect as a replacement casters set for office chairs that have hard, noisy and rough plastic wheels. 2.Universal Size (NOT FOR IKEA): This set of 5 chair wheels fits perfectly with most types of office chair (NOT FOR IKEA) 3.Strong Load Capacity: Five casters with a total load capacity of 330 lbs, they can fully meet the daily needs of most people. 4.Safe for the floor: The chair casters are made of high-quality rubber and touch the floor more gently without scratching the floor when sliding. 5.Sturdy and durable: The caster has undergone many extrusion tests, which proves its sturdiness and durability, which can meet your life and work use. Package Included: 5 replacement wheels Notes: The colors may vary due to different monitors, please