Specifications: Material: Metal + Silicone Color: Black, Blue, Green(Optional) Total Length: Approx. 20cm / 7.9inch Diameter: Approx. 5.5cm / 2.2inch Suitable Handlebar Diameter: Approx. 2.3cm / 0.9inch Item Type: Bicycle Hooter Package Include: 1 x Bicycle Hooter Only Remind Pedestrians: Bike air horn has a large-diameter horn opening and an elongated body, which emits a rhythmic and loud sound to remind pedestrians to pay attention in time. Selected Metal And Silicone Materials: Portable air horn is made of selected metal and silicone materials, the pressing part is made of soft silicone, and the bell mouth is made of high-strength metal, which can adapt to our long-term use. With A Metal Bracket: Bike air horn bugle has an extruded silicone base for a classic horn sound and comes with a metal bracket for easy mounting to the handlebar. Perfectly Match: The cycling hooter has a stylish, beautiful and simple design, the sophisticated look appeals to us, and it matches your bike perfectly. Wide Range of Applications: Bicycle air horns have a wide range of applications and can be applied to bicycles, mountain bikes, ATVs, recreational vehicles, motorcycles and other models. If you feel that your bike's bell is very small, you can try our product - air horn.