Strong sound penetration performance - a novel bell with a loud and crisp sound. 120 decibel sound can penetrate noisy traffic. It has been specially developed as a safety warning for mountain bikes and road bikes. Material: bicycle bell is safe, easy and durable to use and is lightweight, made of robust aluminium alloy and ABS material, rust-proof, durable, corrosion-resistant with extended service life. Compared with conventional bells, it is more convenient,prettier, sweeter and louder. A new type of bell: one bell,three tones ,each tone is different,giving you a different ride. The bell fits perfectly and discreetly on all handlebars (22-24 mm) and is adequately loud. Easy to install: lightweight, compact design, safe and durable, easy to install with a screwdriver. Easy installation in 1 minute. Practical: fits handlebars of all mountain bikes, road bikes, sports bikes, childrens bikes, TT mountain bikes and city bikes. Strong sound penetration performance - a novel bell with a loud and crisp sound. 120 decibel sound can penetrate noisy traffic. It has been specially developed as a safety warning for mountain bikes and road bikes. Material: bicycle bell is safe, easy and durable to use and is lightweight, made of robust aluminium alloy and ABS material, rust-proof, durable, corrosion-resistant with extended service life. Compared with conventional bells, it is more convenient,prettier, sweeter and louder. A new type of bell: one bell,three tones ,each tone is different,giving you a different ride. The bell fits perfectly and discreetly on all handlebars (22-24 mm) and is adequately loud. Easy to install: lightweight, compact design, safe and durable, easy to install with a screwdriver. Easy installation in 1 minute. Practical: fits handlebars of all mountain bikes, road bikes, sports bikes, childrens bikes, TT mountain bikes and city bikes.