220lbs maximum load capacity for each fence gate caster wheel. Suitable for all terrains, such as asphalt, concrete, dirt, brick, grass, farm, fence. Fit wood, metal or vinyl doors. Product Name: Gate Caster Excellent in mechanical strength and load capacity, easily transform to any direction you want. Size: 4 inch Unique spring built-in design prolongs the spring's life while providing a more beautiful appearance. Material: Rubber, Steel Package includes: 1 x gate wheel Note: 1. Please allow a slight size error due to manual measurement. 2. The colors may exist a slight difference due to different screens. 3. If you have any questions, please feel free to contact us, we will solve it for you within 24 hours.