High quality: High-quality POM plastic. Adapts to different types of showers. Ensures that your doors slide more comfortably No decompression and no wasted money: Did you buy a sliding door system and it broke? You think with horror that now you have to buy a new one. Forget it! There are replacement rollers for shower doors that fit all sliding door systems in your home. If you have problems with sliding shower doors, use this quick solution and don't waste your money Use anywhere: Shower door sliders for showers, massage cubicles, bathtubs, whirlpools and even for furniture accessories. Ensure that the door or doors open easily and smoothly. Replace your broken system. Premium shower rollers Roller component: Smooth rolling of the door with a light effortless forward or backward movement for shower cubicles, hydromassage boxes clearly perform the task assigned to them, distributing the mass of the glass, directing the movement in the given direction. This gives the product even longer durability and lifespan. Roller diameter: 25 mm. Inner: 5 mm and thickness: 5.5 mm. With M4 20 mm length