Material: aluminum alloy + PP. Applicable handlebar diameter: 2.2-2.4cm. decibel: 90-100 decibels. Strong sound penetration: with a new upgrade of bicycle bell, the sound is not only clear and loud, but also stable. Up to 100 decibels you can hear pleasant sounds in noisy environments. Our bicycle bell specially developed for the safety of mountain bikes and races, especially for the safety warnings of mountain bikes and races [New design and aluminium alloy material]: bicycle bell made of high-strength aluminium alloy and ABS, strong and durable, waterproof, rust, sun and corrosion resistant and ensures a longer service life. Aluminum alloy top mount makes the bicycle bell overall stronger and more stable. Details and advantages of bicycle bells: specially designed for all cycling enthusiasts. A thicker and more precise stainless steel nib full of elasticity makes for strong and long-lasting ringtones. Non-slip paddles and screws are stable and not easy to fall off. All components, sound structure, etc. are professionally constructed. 22-24 mm card slot design, suitable for many types of bicycles Modern mini bicycle bell: high-quality and unique invisible small bell road bike, exquisite and compact, does not take up space. Bicycle bells. Compared to conventional bells, it has a more comfortable operation, a louder sound and a very simple appearance. Bicycle bell loud is the best bicycle companion. Easy to install: with the design of the switch clip, your installation becomes faster and easier, fits perfectly on all handlebars 22-24 mm, bicycle horn suitable for many bicycle types. Suitable for the installation and conversion of mountain bikes, sports bikes, racing cars, city bikes, children's bikes and scooters. This is also a cool gift for your children or friends