I understand the helplessness of your beloved bicycle when it is stolen, so we designed this bracket to fix the Airtag in the installation position of the bicycle bottle cage. The product size is small, the thickness is only 11mm. You can fix the Airtag to the installation position of the bicycle bottle cage. And the installation position is under the bottle cage, so it is not easy to find and disassemble, which can effectively protect your beloved bicycle. Using this kind of small bracket can effectively reduce the risk of bicycle theft. Even if your bike is stolen by the Martian, it can be retrieved, but only if the Martian is willing to return it to you. This product contains: 2 extension bolts, 1 fixing bracket