1、【HIGH QUALITY MATERIAL】 The bike bell made by high quality aluminum and plastic material that is anti-rust and anti-aging. These factors provide a prolong usage to men and women bikes, boys' and girls' bikes. 2、【LOUD WARNING BELL】 This bike horn ring features a rotated collision sounding system that delivers loud ringtones. Loud ringtones can catch attention of pedestrian and offer you a safe cycling on the road. 3、【LIGHTWEIGHT】 This bicycle ring features lightweight and durable at the same time in the reason of high quality material. The bike bell may be pressed in the transportation, just spin the upper shell and pull it up a little the bell ring will work as well. 4、【EASY TO INSTALL】 This classic bicycle bell comes with a quality and durable mounting bracket that allows easy installation as a part of bike components on bike handlebars with outside diameter 20-25 mm. 5、【FIT FOR MOST BIKES】 This bell can perfect fit for most mountain bikes, road bikes, exercise bikes, kids mini bike, or vintage bike. And it also can be extensive used for BXM bikes, Trek bikes, Giant bikes, Kids Bike etc. It is a wonderful and perfect bicycle bike ring horn. 1 pcs Bike Bell Easy to install: With a universal size bracket, it is suitable for most handlebars (outside diameter 20-25 mm), easy to install firmly and not easy to slip or fall off. Material and size: The bicycle bell is made of aluminum and plastic, which is durable and rust-proof, which can ensure a clear sound; Size: The size of each bicycle bell is about 1. 2 x 2.2 inches, light and suitable size to attract your attention. Fashionable appearance: The bicycle bell bears the words "I love my bicycle", and "love" is expressed in a heart-shaped pattern, with a colorful shell design, and children will love it. Wide applications: Suitable for most mountain bikes, road bikes, exercise bikes, old-fashioned bicycles and children's mini bikes. They are suitable for adults and children. They work well and emit clear bicycle bells. Specification: Material: Alloy Size: about 7* 5.5cm Caliber: about 2.22cm