Usage Tips:Standard Suitable Size For Patio Table Umbrella Hole Ring: Garden umbrellas hole ring suitable for those umbrella poles of 1.63 inch in inner ring diameter or smaller, Suitable for a 2 inch hole. Suitable for glass, iron and wooden desktops and can also be used as a desktop stringing box Patio Table Umbrella Hole Insert Material: Patio table umbrella hole ring is made of pvc plastic, flexible plastic ring and solid plastic hole cap, not easy to break to perfectly seal the hole.Measure umbrella pole size before ordering Function: patio table umbrella hole ring plug can prevent scratches and dents on umbrella pole caused by friction with the patio table, and reduces umbrella swaying caused by wind. Plastic patio table rings are to temperature, light-fast, oil and water , suitable for long-term to use outdoor Easy to Install: The installation of umbrella hole ring, Cap, Cover doesn't require much effort. Threads never loosen, cover the lid to restore the integrity of the table, without worrying about things falling. the cap included can decorate the look of the tabletop when your umbrella is not in use Wide Range Of Application: the table umbrella hole ring is great for coffee shop, bar, milk , yard or other glass outdoors patio table. Free return and exchange service, environmentally friendly recyclable materials Color: Black Material: plastic Package Contents: 1 * Umbrella Hole Ring Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.