Product Dimensions - The outer diameter of the ring is about 6.24 cm, the inner diameter is about 4.22 cm, and the thickness is about 0.7 cm. Suitable for glass or acrylic tables with a standard 5 cm hole. Durable and Flexible Material - Made of high-quality silicone, soft, durable, heat-resistant, and not easy to yellow. Its flexible structure fits perfectly into most table holes. Suitable for Many Types of Tables - Thanks to its elasticity, it is ideal for table holes with a thickness of less than 0.7 cm. Note: Slight variations are possible. Soak the product in warm water before installation to facilitate installation. Stable Parasol Hold – The ring stabilizes the parasol pole and protects the table surface from scratches and wear caused by friction. Versatile Use – Ideal for cafes, terraces, bars, ice cream parlors or other outdoor glass tables – ensures a stable hold and a neat appearance.