Keep your bikes safe with protective holder. This holder is designed to conceal your tracking device, making it hard for thieves to It is made from robust materials that can withstand harsh conditions. The holder is easy to install and provides a secure fit, ensuring your tracker remains hidden and protected. Features -Color:Black -Material:Plastic, aluminum alloy -Size:15.00X7.50X7.50cm/5.89X2.95X2.95in(water bottles cage) -Size:8.00X4.00X1.00cm/3.14X1.57X0.39in(protective case) -Invisible : the hidden holder design helps prevent bicycle theft, keeping your bikes secure and your property safe -Highaccuracy tracking: with technology, this holder offers precise tracking of your bicycle, ensuring if lost -Comprehensive antitheft protection: featuring antipry and locks, this holder provides extensive protection for your bicycle against theft -Versatile for all riding conditions: whether for city commuting or mountain biking, this antitheft equipment is suitable for all cycling scenarios, offering complete protection -Easy and quick installation: the antitheft equipment is designed for easy installation with minimal steps and no need for additional tools, ensuring a effortless setup Package list: 2 x protective case 2 bottles cage 4 x wrench 8 x screws