Allows the mounting of and water bottle cage with standard mounts to tube or bar 3.25` or less in diameterPerfect for all frame styles of bicycles but can also be used on golf carts, Side by Sides, or any other vehicle with tubing less than 3.25`Rubber lined base plate resists moving and twisting once installedBlackAdjustableUPC/EAN/GTIN: 859402006499