[SPRING DESIGN]: This gate caster adopts advanced spring design, which can automatically adjust the height on uneven ground, prevent the door from sagging, and can open and close the door freely. And be sure to maintain contact with the floor when opening and closing the gate easily, thereby reducing noise! [HEAVY-DUTY CASTERS]: The gate spring caster is made from Made of high quality PU material and galvanized alloy, strong and durable. The caster wheel has a maximum load capacity of 60 kg and can withstand exposure to chemicals and solvents. These are the ideal gate wheels for wooden and mental gates. [GOOD SHOCK ABSORPTION]: The design of the PU wheel and spring clip promotes the smooth operation of the caster when rolling on uneven or rough surfaces, reducing friction with the ground, making it easier to move and open or close the gate easily, with a shock absorption effect. [EASY INSTALLATION] : Heavy duty universal mounting plate with 4 holes for easy attachment to wooden doors or along the horizontal or vertical guides of a tubular door, fits perfectly and works well. It is the perfect heavy-duty gate wheel for your daily life. [WIDE APPLICATION]: This heavy gate wheel can be applied to wooden garden gates, front doors and fences courtyard, revolving doors, sliding doors, storage racks, carts, flight cases, trolleys, tool boxes, speakers, cabinets, amplifiers, equipment racks, various furniture , etc., it can bring great convenience to your life. Sold by MSBD Store