Description:[Material]: The sliding door replacement wheels are made of nylon and solid copper, not falling off, strong and durable to use, and the thickened copper shaft provides great support.[Features]: Sliding door-bearing rollers have strong bearing capacity. The bearing is enclosed, waterproof, and dustproof. It is easy to use and control, you can use a flat screwdriver to adjust the height of the glass door.[Rolling Smooth]: The nylon wheel can roll smoothly and quietly, with small friction coefficient, it is not only without harsh noise but also will not scratch the floor.[Application]: The sliding bearing fittings can be used for repairing rollers or replacing rollers, it is widely used in kitchen, bathroom, business, office, sliding door, sliding window, furniture accessories, etc.