4Pcs Heavy Duty Castor Wheels Spiral Caster 50Mm Rubber PU Swivel 200KG Castor W

--RUGGED AND DURABLE: The trolley castor wheel is made of heavy-duty steel and polyurethane. The rotating rubber part of the wheel is very strong and can provide a lot of heavy support. Spiral casters are very easy to install.\n--HEAVY-DUTY CAPACITY: The load-bearing capacity of a single caster is 50kg, and the total load-bearing capacity of the four casters is 200kg. The wheels are strong and can easily deal with some unevenness of the license plate. Step on the brakes anytime, anywhere. Spiral casters can move smoothly and are suitable for all floors, including hardwoods, easy-to-move furniture, and powerful brakes that are securely locked.\n--NO NOISE: The spiral casters use double ball bearing rotating heads to ensure that the casters roll easily and smoothly on the floor without leaving marks on the floor. The casters can rotate 360\u00B0, change direction by themselves and adapt to your movements. There is no noise when the casters roll, and it will not disturb anyone when works