Description This support wheel is designed to prevent doors from sagging, ensuring smooth and stable operation. The bottom sliding wheel is for maintaining the alignment of your doors, while the directional wheel allows for easy side installation. Ideal for kitchen islands and other movable furniture, this wheel set enhances functionality and durability. Features -Color:Black -Material:Rubber, galvanize -Size:8.40X4.80X3.50cm/3.30X1.89X1.38in -Precision bearings: designed with precision bearings, ensuring smooth and silent operation for an enhanced home experience -Durable materials: crafted from highstrength materials, offering excellent loadbearing capacity to effectively address door sagging issues -Directional rail system: features a directional rail system to control door movement, prevent misalignment, and improve overall stability -Versatile installation: suitable for various installation scenarios, whether sidemounted or vertically installed, adapting to diverse needs effortlessly -Easy maintenance: engineered for simple upkeep, maintaining optimal performance even after prolonged usePackage list: 4 x Door Support Wheels 24 x Screws (Diameter 4 mm)