Features 1、Door spring wheel, suitable for uneven road. 2、Spring wheels are non-slip and have a high safety factor. 3、Rubber wheel material, wear resistance, pressure resistance and not easy to wear. 4、Easy to move and roll, make opening and closing gate easy. 5、Strong loading capacity, not easy to deform and long service life. Specification Item Type: Spring Wheel Material: Rubber Steering: Universal casters Colour: Black Bearing: Without shaft Scope Of Application: Door spring wheel, uneven road. 4 Inches: Diameter: Approx. 100mm / 4in Wheel Width: Approx. 37mm / 1.5in Wheel Thickness: Approx. 25mm / 1in Maximum Load: 80 (kg) Installation Height: Approx. 310mm / 12.2in 5 Inch: Diameter: Approx. 127mm / 5in Maximum Load: 100 (kg) Installation Height: Approx. 350mm / 13.8in Wheel Width: Approx. 45mm / 1.8in Wheel Thickness: Approx. 32mm / 1.3in Package List 1 x Spring Wheel