General Description This set of 4 nylon and zinc alloy rollers is designed to provide excellent elasticity, good wear resistance, and increased durability. Ideal for replacing worn rollers on your glass doors, it is ideal for shower doors, massage rooms, and bathtubs. Technical Specifications Material: Nylon / Zinc Alloy Wheel Diameter: 25 mm Wheel Thickness: 6 mm Applicable Glass Door Thickness: 8-10 mm Glass Hole Diameter: 4-8 mm Compatibility and Accessories Suitable for glass doors with a thickness of 8-10 mm and a hole of 4-8 mm, ideal for shower door and bathtub installations. Installation To install the new rollers, simply remove the old ones and replace them with the new ones. A simple screwdriver is all you need to complete this repair. Use These rollers ensure smooth and quiet operation of glass doors, ensuring a pleasant user experience. Replace them as soon as they show signs of wear to maintain the performance of your doors. Other Information It is recommended to measure