Usage Tips:Long Service Life- The shower door roller is made of high quality brass shaft and ABS material. It is rustproof, sturdy and durable, stable in quality, and has a long service life.Push- Sliding door wheel set allows the door to slide and save effort. This keeps the door balanced, prevents it from swinging and ensures smooth operation.Suitable for - The bathroom slider is suitable for glass doors with a thickness of about 4 to 6 mm. Compatible with glass mounting hole diameter between 23mm.Easy Installation- The bath runner is easy to move and install. It can also move the door to save space, more beautiful.Practical hardware- A practical hardware for the sliding glass shower door. Day or night, it effectively reduces the noise that occurs when the door is closed Punto de venta Rollers 8 piece shower door set Single wheels, includes 4 upper rollers and 4 lower rollers. Good for replacement shower door rollers. The shower door roller is made of brass rod and ABS plastic material, it is rust resistant, sturdy and durable . Comes with screws and plastic cover. These single shower door rollers fit glass shower doors. The sliding door roller kit makes the door sliding and effort saving. A practical hardware for the sliding glass shower door. The bath runner is easy to move and install. It can also move the door to save your space. Properties: Simple sliding rollers and easy cleaning. The wheels features a smooth, quiet glide - Perfect for most shower enclosures, shower stalls and steam room enclosures. Glass door roller dramatically lengthens the running time of the shower door roller. Specification: - Material: nylon roller - Weight: 23 g/piece for upper wheel, 23g/piece for lower wheel - Glass thickness:5mm - Pulley diameter:23mm - Glass hole size:11mm < p > - Product features: Upper wheel, adjustable, wheel can be rotated left and right, lower wheel with spring-loaded left and right rotation Scope of delivery: - 8 shower enclosure castors EXCEPTIONAL QUALITY A The set of 8 casters of (4 upper casters and 4 lower casters) - is an exceptional product of better quality. which combines high rigidity and solidity with excellent flexibility.; BEARING ELEMENT Rollers for shower cabins and hydromassage cabins ensure the smooth sliding of the doors forwards or backwards effortlessly. They carry out their mission perfectly while distributing the weight of the glass and controlling the movement in the desired direction. WATER-REPELLENT COATING Thanks to the use of special ultra-water-repellent lubricant containing the PTFE for shower enclosures, the life of the rollers will become even longer EASY FOR YOU: You could carry out this replacement yourself, you will only need to have rollers of the appropriate type and a screwdriver.