Features 1、High-quality materials: the bicycle horn is made of a polished aluminium alloy, is weatherproof, does not rust and the rubber ball is very soft. Size: about 19 x 7.5cm. A classic horn for a classic ride. 2、 Safe and loud: once pressed on the rubber ball, a widely audible horn sound, the distinctive sound lets everyone know that you are coming. When you clamp the nozzle, the elastic rubber balloon automatically returns to its original state when inhaled. 3、 Adjustable clamp: This bicycle horn is ideal for bicycles with handlebars. Tighten the screw with an Allen key, which can be easily attached to the handlebars of the bicycle or removed from the bike. 4、 Easy installation: the bicycle horn can be mounted on any bicycle handlebar with adjustable handles, this metal bicycle horn is a fun alternative to the bicycle bell for handlebar attachment. 5、 Package included: 1 x retro metal bicycle horn, 1 x bracket with screw. Retro look makes you stand out from the crowd. This classic retro bicycle bell is suitable for common bicycle handlebars, but also for bicycles, mountain bikes and retro bikes. Material: metal + rubber Color: silver + black Size: about 19*7.5*2.2cm Suitable handlebar size: 22.2mm in diamete Package List 1 x Retro metal bicycle horn 1 x Bracket with screw