Item Type: Door Wheel Material: Iron Weight: Approx. 850g / 30oz Product Size: Approx. 80x112mm / 3.1x4.4in Wheel Diameter: Approx. 35mm / 1.4in Suitable Door Thickness: Approx. 35-45mm / 1.4-1.8in Application: Barn doors, interior doors, kitchens, American sliding doors, sliding doors, etc. 1Suitable for barn doors, interior doors, American sliding doors, glass doors, etc. 2It can be adjusted horizontally and vertically, suitable for various doors. 3Double?wheel design, ensures that your door opens and slides comfortably. 4Good load?bearing, with high hardness, not easy to deform or damage. 5Door hardware accessory, easy to install, so that the door can be opened easily.1. Please allow 0?1 inch error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.2 x Door Wheel