<br>Features: <br>Made of clear silicone, soft and durable, not easy yellowing. <br> <br>Function: <br>Prevents scratches and dents on umbrella pole caused by friction with the patio table. <br>Reduces umbrella swaying caused by wind. <br> <br>Specification: <br>Size: <br>Inner diameter: umbrella rings: 1.65 inch, cap: 1.65 inch. <br>Outer diameter: umbrella rings: 2.4 inch; cap: 1.85 inch. <br>Suitable for: a 2 inch hole in a glass or acrylic top measuring. <br>Material: clear silicone <br>Quantity: 4 umbrella rings and 4 caps <br>Color: clear <br> <br>Package includes: <br>4 x Umbrella hole ring plug and cap set