High-quality materialSliding door rollers are made of high-strength nylon and alloy material, wear-resistant and durable, and can be used for a long time. Silent furniture casters The sliding door rail casters are made of silent nylon wheels, which are quiet and slide without scratches. You can open and close the door comfortably and quietly. Adjustable height The retractable upper 30mm sliding wheel is convenient for door installation, and the adjustable height is suitable for various interior doors and windows. You will get heavy duty sliding door rollers, the size of the sliding door accessories is 85 x 45mm. The sleek black design blends seamlessly with your doors and windows. Multiple ApplicationsMultifunctional sliding door rollers are ideal for cabinets, windows, cupboards, cupboards, display cases, etc. . Quiet sliding door rollers Smooth-rolling nylon wheels allow you to open and close doors easily and quietly Premium nylon and alloy materials ensure excellent performance even after long-term use Product specifications:< /p> Material: Nylon and Alloy Golden grinding wheel diameter: 30 mm Mounting plate dimensions: 85 x 45 mm Hole diameter: 6 mm Color: Black Package includes: 2 sets of rollers for sliding doors Seuais