General description This pack of 5 office chair castors is designed to replace hard, noisy plastic wheels, providing a smoother and quieter experience. They are suitable for most office chairs, except for IKEA models. Technical specifications Color: Black and White Material: Polyurethane and Metal Maximum Weight: 50kg Wheel Diameter: 2" (50mm) Stem Diameter: 7/16" (11mm) Total Load Capacity: 330 lbs Usage Ideal for replacing noisy and rough plastic wheels on office chairs. Safe for all floor types, as the high-quality rubber minimizes scratching. Other information Package includes: 5 replacement wheels. Colors may vary due to different monitor settings.