Features Spring-loaded design: The gate stem wheel adopts a spring-loaded design, which automatically adjusts the height on uneven ground while eliminating the droop of the gate, allowing the gate to open and close freely Heavy-duty casters: The wheels have a maximum load capacity of 110 pounds and can withstand exposure to chemicals and solvents. Spring swivel caster weighs about 1141g/40.2oz, casters are straight 50mm/2in Application: 2 Pu spring loaded swivel caster can absorb shock, can be widely used in home and office equipment, communication equipment, ship assembly and other machinery industries PU material and metal structure: The heavy duty loaded furniture castor is 100% brand new, made of high-quality PU material and metal structure, strong and durable, not easy to bend, and can be used for a long time. Easy installation: 2 Pu spring loaded swivel caster apopts a heavy-duty universal mounting plate with 6 holes that can be easily attached to wooden doors or along horizontal or vertical rails along tubular farm gates. Features: Spring loaded design: allow gates to open and close freely by automatically adjusting height on uneven ground while eliminating gate sag. Heavy duty caster: the wheel has a maximum load capacity of 110lbs and can also withstand exposure to chemicals and solvents. Shock absorption: easy to move and make opening and closing gate easy. The heavy duty loaded furniture castor is made of premium PU material and metal construction, sturdy and durable. Heavy duty universal mounting plate with 6 holes to easily attach to wooden gates or along horizontal or vertical rails of a tubular farm gate. Specification: Material: Polyurethane (PU) + Metal Weight: Approx.1141g/ 40.2oz Caster Dia.: 50mm/ 2in Load capacity: Max.50kg/ 110bs Package List: 1 * Gate Wheel Note: Please allow slight error due to manual measurement. Thanks for your understanding. Package List