Description: The repair edge is made of rubber, flexible, anti-aging and durable. You can easily replace the broken or damaged one. Please clean the glue before installing the new edge.Please pay attention to the size of the item before you buy it. Specifications: Material: 75A Rubber. Colour: Black. Outer diameter: 84 mm. Convex outer diameter: 73 mm. Inner diameter: 60 mm. Inner diameter: 53 mm. Package contents: 4 x rubber edges.