Note:Just a protective case, does not include air tag. SPECIFICATION: Item Name: Reflective Board Bracket For AirTag Tracker Material: PLA, Plastic Features: Easy Installation, Groove Design, Wear Resistant Size Details: Diameter: 4.2cm/1.65 (Approx.) FEATURES: Made of high quality nylon material, wear-resisting and durable. A bracket specially designed for bicycles cushions, which can hide your tracker under the . For users who have installed a tail bag or tail lamp under the cushion, you can install this bracket. You do not have to worry about it being disassembled by the theft. It is hard to find there is in your bike as well. This gives you important time- to locate your bike after it was-stolen. Package included : 1 x Reflective Board Bracket