HIGH OF QUALITY: High quality POM plastic. fit different kinds of showers.Ensure your doors the most comfortable glideNO DISCOMPORT & NO WASTE OF MY: Did you buy a sliding system and it broke? You think with horror that now need to buy a new. Forget about it There is replacement shower door roller which will fix for you any sliding system in your home. If you are having trouble with sliding the shower doors, use this quick fix and do not waste your myAPPLICATION ANYWHERE: Shower Door Runners for showers massage cabins, bathtubs, whirlpool and even for furniture fittings. Make sure with our runners the door or the doors slide open easily and smoothly. Replace your broken system high quality Shower Enclosure RollersBEARING COMPNT: Smooth running of the door slight movement forward or back design effortlessly shower rollers for shower cabins, hydromassage boxes clearly perform the task assigned to them, distribute the mass of the , control the movement in the given direction. This gives the product even more durability and longer service lifeSteel part of the wheel: 9mm diameter x 3mm height" Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store