High quality : Adapts to different types of showers Ensures your doors glide more comfortably No decompression and no wasted money: Did you buy a sliding system and it's broken? You think with horror that now you have to buy a new one Forget There are replacement shower door rollers that will fit any sliding system in your home If you're having trouble sliding shower doors, use this quick fix and don't waste your money Use anywhere: shower door slides for showers, massage cabins, bathtubs, hot tubs and even for shower accessories furniture Make sure the door or doors open easily and smoothly Replace your broken system Premium Quality Shower Rollers Rolling Component: Smooth rolling of the door with a slight effortless forward or backward movement for shower enclosures, hydromassage boxes clearly perform the task at hand assigned, distributes the mass of the glass, controls the movement in the given direction This gives the product even more durability and a longer life the wheel: 19 mm in diameter Quantity delivered: 4 pieces (send the screws)