HIGH QUALITY: Premium nylon disc and copper mandrel. Fits various types of showers. Ensures smooth sliding operation No decompression, no waste of money: Designed as a replacement for broken sliding system components. Avoid the need to replace the entire system. This shower door roller can be attached to most existing sliding systems. Ideal solution if your shower door is difficult to slide Use everywhere: Suitable for shower door rollers in bathrooms, bathtubs, jacuzzis, or for furniture adjustments. Helps maintain smooth and easy door movement. Replace damaged rollers with durable, high-quality components Roller components: Enables smooth forward and backward movement. Shower door rollers operate effortlessly. Helps distribute the weight of the glass door and maintains control during movement. Enhances durability and extends product life Type: 4 shower door rollers. Roller diameter: 19 mm. Includes stainless steel screws. Made of steel, corrosion-resistant and rust-proof. Features high load capacity, stable performance, low friction, and quiet operation. Easy to install, commonly used for bathroom sliding glass door rollers