HEAVY DUTY CASTER WHEELS: casters set of 4 with brakes are made from premium thickened materials and rock-solid construction with heavy-duty dual steel ball bearings could strong enough to load up 2200 lb by a set of caster wheels. It’s good for transporting and displaying quietly and safely, SAVE YOUR BACK AND EFFORT. DOUBLE SAFETY BRAKE: Our top plate swivel caster wheels can locks the wheel and the swivel simultaneously, holding the equipment firmly remain in place when the 4 inch casters are locked. Locking casters design make it more safe when used as rolling workbench casters, industrial casters, heavy-duty casters, especially on uneven surface. SWIVEL CASTERS SAVING STRENGTH: Saving your energy by installing these 4 inch caster wheels to move heavy objects in and out, you can maneuver around your furniture easily and effortlessly. Upper and lower raceways filled with high-quality swivel bearings that enables the heavy duty casters to rotate 360 degrees smoothly, flexibility and quietly even under heavy loading. FREE HARDWARE AND GUARANTEE - Each caster wheels heavy-duty package includes 4 swivel casters, 16 screws, 16 washers, 16 bolts, 16 nuts,1 screwdriver, and 1 spanner, suitable for different installation ways. If for any reason you are not satisfied with the casters, please contact us. We provide 30-day money back and 12-month premium service. 100% Satisfaction Guarantee for risk-free shopping! WIDELY APPLICATIONS & EASY INSTALLATION: Adding mobility to your furniture, the 4 inch casters can be used indoor and outdoor, both industrial and residential applications, you can easily install these wheels for cart, DIY caster wheels for furniture, make living-room table with wheels, add furniture casters for easy moving. Industrial casters are essential components used in industrial equipment and transportation. They enable smooth movement and positioning of objects, enhancing efficiency and flexibility. Casters come in various types, including fixed, swivel, and brake casters, suitable for different applications. They are commonly made of materials like polyurethane, rubber, nylon, or cast iron, offering diverse advantages such as wear resistance and load-bearing capacity. Regular maintenance ensures optimal performance and safety.