High Quality: High quality POM plastic. Adapts to different types of showers. Ensures your doors have the most comfortable glide No decompression and no wasted money: Did you buy a sliding system and it broke? You think in horror who now has to buy a new one. Forget There is a replacement shower door roller that will allow you to fix any sliding system in your home. If you have trouble sliding shower doors, use this quick fix and don't waste your money Use anywhere: shower door slides for massage cabins, bathtubs, jacuzzi and even for furniture accessories. Make sure with our slides, the door or doors open easily and smoothly. Replace your broken shower rollers with high quality Rolling component: the smooth rolling of the door is light and easily moves forward or backward - Shower rollers for shower enclosure - The hydromassage boxes clearly perform the task assigned to them, distribute the mass of the glass, control the movement in the given direction. This gives the product even more durability and a longer life Steel part of the wheel: 9mm diameter x 3mm height