Stouchi Apple AirTag Bicycle Bell,Diameter 22mm-25mm Anti-theft Hidden Doorbell Waterproof Classic Brass Bicycle Bell Loud,Clear Sound,Mountain Bike/Road Bike Accessories Product Information Anti-theft Design: hide Apple AirTag in Stouchi Bicycle Bell, track your bike at any time and stop worrying about it being stolen. The design of the Stouchi bicycle bell is a European design patent and is protected throughout Europe. Patent number: 009087372-0001 Little Bell: Fits 22-25mm diameter bicycle handlebars, suitable for most bicycles, road bikes, mountain bikes, BMX, children's bikes, adult bikes, scooters, etc. About waterproof: Includes a waterproof rubber ring to prevent water from entering the air label. Cycling in the rain won't damage the air labels Premium Materials: Made of premium classic retro brass, high-strength springs and strong alloy bracket make it durable. Comes with a protective pad to prevent the bike from slipping or scratching