The bike bell made by aluminum and plastic material that is anti-rust and anti-aging. Loud ringtones can catch attention of pedestrian and offer you a cycling on the road. Suitable for most bike type. Features - - Material: Aluminum alloy and plastic. - Size: 4.00X3.40X3.18cm/1.57X1.34X1.25in - Made of , durable for long term use. - Environmental protection, sound clear and loud, quick remove rubber band, no need screws, easy to install. - Suitable for handlebars of different diameters. Perfect for most bike type. - Anti-rust, anti-aging, sturdy and practical. - Loud ringtones can catch attention of pedestrian and offer you a cycling on the road. - Warm Tip: Dear buyer, due to lighting effect, monitor’s brightness, manual measurement, etc., there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you! Package list: 2 x Bells