High quality: Adapts to different types of showers. Ensures your doors glide smoothly. No decompression and no wasted money: Did you buy a sliding system that broke? Avoid the hassle of replacing the entire system. These replacement shower door rollers fit most sliding systems. If you're having trouble with sliding shower doors, this quick fix helps save time and money. Use anywhere: Suitable for shower doors, massage cabins, bathtubs, hot tubs, and bathroom furniture. Ensures doors open easily and smoothly. Replace your broken rollers with this premium solution. Premium quality shower rollers: Provide smooth rolling with effortless forward and backward movement for shower enclosures and hydromassage cabins. Effectively supports the weight of glass doors and controls movement in the intended direction. Enhances durability and extends product life. Wheel diameter: 19 mm. Quantity: 4 pieces (includes screws).