[Quantity]: 8 shower enclosure casters, consisting of 4 upper casters and 4 lower casters. Good for replacement shower door rollers. [Size]: Shower door rollers are 23mm, maximum glass thickness is 6mm. suitable for glass doors with a thickness of about 5-6 mm. [Material]: Shower door rollers are made of ABS. It is rustless, sturdy and durable, stable in quality, and has a long service life. [Easy Installation]: Shower door rollers are easy to move and install. Individual shower door rollers fit glass shower doors. A practical piece of hardware for sliding glass door. [Application]: Shower cabin castors for shower cabins and massage cabins, bathrooms, jacuzzi and even for furniture. That doors and sliding systems can be opened easily and smoothly using our rollers Specification: Material: ABS and alloy Roller diameter: 23 mm Suitable for glass thicknesses of: 5-6 mm Product features: Simple sliding rollers and easy cleaning. Wear-resistant wheels are characterized by smooth sliding and quiet. Perfect for most shower enclosures, shower enclosures and steam room enclosures Water repellent lubricant containing PTFE for glass door rollers, the life life of the shower door rollers is considerably longer. Scope of delivery: 8 x shower enclosure rollers