[Corrosion-Resistant And Rust-Proof]: Our stainless steel caster wheels resist corrosion and rusting, delivering long-lasting durability for demanding environments with high humidity, chemicals, and extreme temps. Casters come with solid blue polyurethane wheels, which are ideal for clean room environments that are often exposed to large amounts of water. Solid polyurethane wheels withstand temperatures from -40° F to +180° F. Ideal for healthcare, food service, manufacturing, and laboratory. [Durable and Maintenance-Free]: Our stainless steel caster set of 4 requires minimal maintenance for hassle-free performance. Corrosion resistance eliminates frequent replacements, saving time and money. Stainless steel construction retains a sleek look. [Heavy Duty Capacity]: Heavy Duty Casters Diameter: 4", Width: 2", Top Plate: 4x 4-1/2, Overall Height: 5-1/2. These industrial casters are engineered, Heavy Duty Caster Set of 4 to support loads up to 3600 lbs, making them ideal for outdoor use and transporting heavy equipment and objects while maintaining stability. [Delrin Bearings]: The casters are equipped with Delrin bearings and Delrin bushings. Compared with other conventional metal bearings, Delin bearings run smoothly and quietly in humid and harsh environments and will not rust. [Wide Application]: Casters are widely used in clean rooms, laboratories, medical and hospital facilities, animal cages, pharmaceutical plants, autoclaves, food processing, bakeries, dairy, food service, catering, hotels, chemical plants, marine environments, fisheries, Cruise ships etc. 4"x2" Stainless Steel Casters, Anti-Corrosion Rust-Proof Industrial Caster- Blue Solid Polyurethane Wheel Capacity up to 3600 Lb. Use for Food Processing, Pharmaceutical Labs(4 Swivel)