[Clear and loud ringtone is eye - Catcher] The fashionable aluminum bicycle bell always emits a clear ringtone, allowing people to hear clearer sound and ride safely. [loud ringtone] bike bell is perfect for most mountain and road bikes, emits a clear bicycle ringtone, loud and clear listening, provides safety alarm for mountain and road bikes. [preferred high quality materials] bicycle rings do not appear after long traces of use, are durable and do not fade, the bicycle bell is made of high quality aluminum and of engineering plastic materials, anti-rust and anti-aging, which allows riders of both sexes to live longer. [Scope and application of use] is suitable for any handlebar of standard linear or stunt skateboard bike, off-road vehicle, children's bike, cruiser bikes and cruiser bikes. [operation and installation] the bike bell can be used with most grips of 0.8 to 0.9 inch (about 2.1 to 2.3 cm) diameter pipes, installation is done in less than a minute using a screwdriver, it's very simple ,