Industrial Caster: Crafted from high-quality stainless steel yoke and polyurethane wheel, the heavy duty caster is designed to endure harsh environments, providing a critical defense to applications exposed to wash-downs, cleaning agents, steam, caustic solutions, and other environmental condition. Ideal for Sanitary Environments: Perfect for environments that require regular cleaning or prioritize hygiene, stainless steel casters are ideal for sanitary, restaurants, food service, healthcare, manufacture, laboratories, Bakeries and residential environments. Corrosion-Resistant & Rust-Proof: Stainless steel caster wheels heavy duty resist corrosion and rusting, delivering long-lasting durability for demanding environment-high humidity, chemicals, extreme temps. Corrosion-resistance casters eliminates frequent replacements, saving time and money. Load Capacity: Each caster wheel can withstand about 250 lbs, and casters set of 4 heavy duty can bear a total of 1000 lbs, durable and not easy to deform, which can keep your workbench smooth and stable to use. Polyurethane wheels provide a high load capacity while maintaining a strong support and smooth roll. SOLID & SMOOTH: No marking polyurethane wheels smooth and quiet movement, making it excellent for indoor and outdoor usage on smooth surfaces to reduce noise and vibration. There is a solid cover over the swivel raceways to shield them from dirt and dust. Mark-free gliding experience on a variety of floors. NINOSO 3" Caster Wheels, Stainless Steel Casters Set of 4 Heavy Duty, Anti-Corrosion Polyurethane Industrial Caster Wheels for Cart (2 Brake& 2 Rigid)