Description: 【Enhance Safe】: Bike Bell emits a high sound similar to a truck , ensuring that pedestrians and vehicles clearly notice your presence, greatly improving your safe while riding 【Environmentally friendly manual inflation design】: Bicycle Bell needs to be manually inflated and pressed to sound, which is an environmentally friendly and energy saving choice suitable for various conditions 【Sturdy structure】: Air Bell is made of solid iron to withstand wear and tear. Ensure stable inflation and durability 【Versatile handlebar installation】: Bike Loudspeaker is easy to install on bicycles, motorcycles, electric bicycles and even agricultural vehicles, and can adapt to different types of handlebars to meet the needs of different users 【User friendly operation】: Bicycle Bugle is designed with simplicity, just press the handle to sound the . Its intuitive design makes it easy for children and the elderly to use Specification: Material:iron Size Chart: Trumpet length 20cm/7.87inch Cylinder length 20cm/7.87inch Tube length 50cm/19.69inch Package Includes: 1 Bike Bell  Note: Please allow slightly errors 1-2cm differences due to manual measurement.