Fits any handlebars with a diameter of 21 - 22.2 mm - whether mountain bike road bike city bike mountain bike e-bike scooter or scooter - our bicycle bell for children and adults fits universally on all bicycle handlebars.Sound up to 120 DB. The Arkim bicycle bell has a strong sound penetration performance the volume of a crisp and loud bicycle bell can hear up to 120 DB pedestrians and passing vehicles can clearly hear your ringtoneCorrosion-resistant copper alloy housing: made of high-strength copper alloy and ABS durable and strong prevent rust and corrosion survives any weather whether you are on the road with the MTB or go daily with the city bike to work.Beautiful appearance and easy to install: ARKIM bicycle bell has a retro design exquisite and mini. Compact and does not take up space can be disassembled in a short time the installation can be completed in 1 minute. Simply tighten the screws on the handlebars with a screwdriver.Unique ringtones: the sound of the ARKIM bicycle bells is not as hard as other bells it has the properties of a clearer sound and a very beautiful echo so you don't have to worry about passers-by being afraid let everyone avoid embarrassment.