Our heavy-duty caster set includes four 3 in. heavy-duty casters, each capable of easily bearing a weight of 375 lbs. With a double-bearing design, they ensure stability and durability. The tire material is polyurethane, ensuring silent movement without leaving any marks, thus protecting the floor. Each caster is equipped with 2-high-quality bearings, making them wear-resistant and durable with a strong load capacity. These 3 in. casters are particularly quiet when used indoors, gentle on floors, and offer flexible movement suitable for various occasions. For customer convenience, we package 4-casters together and provide iron washers and screws. Whether it's a workbench, cart or furniture, our heavy-duty casters can handle it all, becoming your mobility expert.