Features： *Suitable for umbrella poles with a diameter of 38mm. *Suitable for any terrace table, parasol, courtyard umbrella and other choices. *Prevent tilting or shaking caused by wind, helping your patio umbrella to stay upright. *Stabilize the patio umbrella to reduce and prevent scratches and dents caused by friction. *Can be used in combination with a table and an umbrella to make the umbrella center on the table correctly. Specifications： *Material：Rubber/Silicone *Color：Black,White *Style A size： *Inner diameter：38mm *Minimum outer diameter：58mm *Maximum outer diameter：69mm *Style B/C size： *Inner diameter：50mm *Maximum outer diameter：68mm Package Included： 1pcs x Umbrella Cone Ring Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. Suitable for umbrella poles with a diameter of 38mm. Suitable for any terrace table, parasol, courtyard umbrella and other choices. Prevent tilting or shaking caused by wind, helping your patio umbrella to stay upright. Stabilize the patio umbrella to reduce and prevent scratches and dents caused by friction. Can be used in combination with a table and an umbrella to make the umbrella center on the table correctly.Specifications：