Inch Heavy Duty Rubber Damped Spring Loaded Gate Wheels Roller Caster with Spring for Home GateMaterial: Metal and Rubber. 4 inch gate wheel with adjustable spring mount is designed to allow gates to open and close freely. ;It has a load capacity of 50-60 kg and a spring-loaded clamp that acts as a stop when the wheel rolls over uneven or uneven surfaces. ;It also has a universal mount for wooden or metal gates. Heavy duty spring loaded gate wheels adjust with surrounding terrain to maintain gate height throughout the opening and closing cycle. ;These rotating supports work equally well on flat and uneven outdoor surfaces such as asphalt, brick, concrete, dirt, grass, gravel and paving stones. Color: Black Size: 10 cm Delivery quantity: 1 pc Please pay attention to the size and dimensions of the product when shopping to ensure that it meets your needs. In the title, we have provided detailed information about the product, including its features and specifications. We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please do not hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you like it.