Clear and loud sound Small size, big energy. The bike bell delivers a clear, loud tone up to 100 dB. Even on busy, noisy roads it reliably warns passing vehicles and pedestrians. Quick installation Compatible with standard bicycle handlebar sizes 22.2 mm, 25.4 mm, and 31.8 mm. Easy to install with a single screw, and the installation tool is included in the package. Wide compatibility makes it suitable for most adult bikes. Long-lasting and sturdy Built from aluminum alloy and PC material. The rugged, rust-resistant construction stands up to rain and snow, providing reliable performance in varied weather. Hidden design The mountain bike bell measures 624822.8 mm in size, offering a space-saving solution that frees handlebar space for other accessories. The hidden design minimizes attention and preserves bike aesthetics, making it ideal for riders who prefer a low-profile look. Practical use scenarios - Urban commuting: mounted on the handlebar to quickly alert cars, cyclists, and pedestrians at intersections and busy streets. - Mountain biking and trail riding: visible and audible enough to warn hikers or wildlife on narrow trail sections. - Bikepacking or minimalist setups: compact, low-profile design keeps the handlebar uncluttered while maintaining effective signaling.