High quality: made of high quality POM plastic. Adapts to different types of showers. Guarantees a smoother glide for your doors. No compression and no waste of money: did you buy a sliding system that is broken? Are you thinking with horror that you have to buy a new one? Forget it! There are spare rollers for shower doors that fit all sliding systems in your home. If you have difficulty pulling the shower doors, use this quick solution and don't waste your money. Used everywhere: Shower door rollers for showers, massage cabins, bathtubs, jacuzzis and even for furniture accessories. Make sure the door or doors open easily and smoothly. Replace your broken system. Top-class shower rollers. Bearing component: Floating bearing for the door with an easy forward or backward movement without effort for shower cabins, the hydromassage boxes clearly perform the assigned task, distribute the glass mass, control the movement in the specified direction. This gives the product even more durability and longer life. Steel part of the wheel: 9 mm diameter x 3 mm high. Type: 4 rollers for shower door. Thickness of the wheels: 5 mm. Supplied with screws. Suitable for a shower door with a thickness of 4 to 6 mm. Roller diameter: 20 mm, 6 mm inner hole, fastened with an M4 screw. The roller is made of copper + wheel wheel, and the screw is made of stainless steel. Steel resistant to corrosion and rust, good complete performance. Roller's load capacity, good stability, small friction coefficient, good sound damping effect. Easy installation, often used for sliding shower door rollers.