Features: Designed for mountain bikes and road bikes as a safety warning bell with classic ringer sounds Bell trigger can be rotated for a customizable position Alloy dome construction with molded thermoplastic mounting offers a durable build Quick assembly ratchet strap mounts to any size bar 19.2-31.8 mm Compatible with any standard straight bicycle handlebar or scooter handlebar Weight: 0.05 lbs. Style: MM2000