High Quality: High quality POM plastic. Suitable for different types of showers. Make sure your door's most comfortable sliding isn't uncomfortable and doesn't waste money: Did you buy a sliding system and it broke? You are horrified that you need to buy a new one now. Forget it There are replacement shower door rollers that will fix any sliding system in your home for you. If you're having trouble sliding your shower door, don't waste your money with this quick fix. WORKS ANYWHERE: Shower door slides, for shower massage rooms, bathtubs, whirlpools, and even for furniture accessories. Slide open easily and smoothly with our sliding doors or doors. Replacement of damaged systems High-quality shower enclosures, smooth operation of doors Slight forward or backward movement Shower rollers designed for shower enclosures, hydromassage boxes clearly perform the tasks assigned to them, assigning the quality of the glass, controlling the movement in a given direction. This makes the product more durable and lasts longer Steel parts of the wheel Note, because there may be color and size difference between the light effect photo and the actual product, please allow 1-2 cm error Note that the delivered stainless steel screws are different from those in the picture, and the upgraded version is delivered Quantity: (8 Pieces) Shower Door Rollers Size: single wheel diameter 23 Color as shown