【Heavy Duty Nylon Gate Wheel】: This gate caster is made of premium nylon and. 【Spring Loaded Swivel Caster】: Allows gates to open and close freely by automatically adjusting height on uneven ground while eliminating gate sagging. 【Suitable for Gates up to 200kg】: This wheel is capable of supporting heavy gates up to 200kg, making it ideal for larger gates. 【Easy to 【Install】: The heavy-duty universal plate with 6 holes allows for easy installation on wooden gates or along the horizontal or vertical rails of a tubular farm gate. 【Easy to Move】: The wheel is easy to move and roll, making it easy to open and close the gate. Specifications: Material: Nylon + Metal Weight: Approx. 1498g/ 52.8oz Caster Diameter: 100mm/ 4in Capacity of: Maximum 200kg/ 440lbs Package List: 1 x Gate Wheel Note: 1. Please allow a slight error due to manual measurement. Thank you for your understanding. 2. The spring will fail when the load of this product exceeds 50kg, and the maximum is 200kg.