Package quantity: you will receive 2 pieces bike bells, convenient for you to replace and use as a backup Wide application: the bike ring bell suits for road bike, mountain bike, city bike, sports bike, cruiser bike, MTB bike, BMX bike, electric bike and so on, adults and kids both can use it Loud clear sound: the aluminum bicycle ring bell is special designed for mountain bikes and road bikes with the loud and clear sound, volume up to 90-100 decibels so that you can be heard clearly when riding Quality material: the mini bicycle ring bell is made of quality ABS and rubber pads, which can make the bells more stable and durable, can be applied for a long time Universal size: the bicycle bell is adjustable, with 3-layer buckle with 2 different sizes of rubber bands, you can adjust it to different size easily; Fits most bicycle handlebars with diameters from 2.2-3.5 cm(0.87-1.38 inch), easy to carry and assemble