• Built to Last: Made of high-quality plastic and aluminum alloy, it is hard, strong and durable to use
• Tracker Holder: It can hold for Apple AirTag, protecting the tracker against bumping, dropping and scratching
• No Interference to Signal: It works perfectly and will not affect all the functions for AirTag, you don't have to worry about signal strength issues
• Easy to Install: Easy to install to your bike, add a smart tracker to your bike, you don't need to worry about your bike being stolen

Specifications:

• Material: Aluminum alloy + plastic
• Applicable: Suitable for most bicycles on the market
• Beer cap style: 28.6mm tube does not need to install adapter ring, 31.8mm tube needs to install adapter ring