The Secure Tag Holder offers a unique way to install a tracker onto your bicycle frame using the bottle cage mounting holes so you can track and locate your bike in the event of theft.Designed to track your bike down in the event of theft from a long range. At closer range activate the built-in AirTag speaker to help you better locate the tracker and your bikeHoused in a machined aircraft grade 6061 aluminum bodyFits securely under your bottle cageSupplied with 2 x T25 x 25mm/0.98" and 2 x T25 x 16mm/0.62" security Torx bolts and 1 x security keyCompatible with Apple AirTags (Sold separately)