The tracker under bicycle holder is an innovative solution for bikes security. It allows you to hide your tracking device under the bottle cage, making it difficult for thieves to spot. This holder is made from materials that provide durability and protection. It is easy to install and ensures your tracker stays in place during your rides. Features - Color: Blue -Material:Plastic, aluminum alloy - Size: 15.00X7.50X7.50cm/5.89X2.95X2.95in(water bottle cage) - Size: 8.00X4.00X1.00cm/3.14X1.57X0.39in(protective case) -Stealthy antitheft design: the holder's hidden design effectively deters bicycle theft, ensuring the safety of your bikes -Precise tracking: utilizing technology, this holder enables accurate tracking of your bicycle's location, aiding in quick recovery -Robust antitheft features: this holder includes multiple antitheft mechanisms such as antipry and locks, providing thorough protection for your bicycle -Ideal for all cycling scenarios: suitable for both urban and offroad cycling, this antitheft equipment offers full protection for your bicycle in any environment -Simple installation process: the antitheft equipment is easy to install with a straightforward process, requiring no extra tools, making setup quick and convenient Package list: 1 x protective case 1 bottles cage 2 x wrench 4 x screws