PackageIncluded：<br />1 * Water Bottle Holder Shelf （bottle cages not oncluded）<br />1 * Wrapped Board <br />6 * Screw <br /><br />Features: <br />1.Mounts up to two water bottle cages. （bottle cages not oncluded）<br />2.Fits  standard  saddle rail (not compatible with i-beam type). <br />3.Install to the back of bike seat. <br /><br />Specifications: <br />1.Material: Aluminum alloy <br />2.Color: Black<br />3.Size: 112 * 90 * 70mm