Specifications MaterialPP Aluminum AlloyColorBlackDecibel100 110DBWeight38±2gApplicable Handle Diameter22 2 31 8mm Features 1 Super sound the driving mini bell sound clear and loud can spread quickly in noisy road conditions effectively improve the safety of cyclists 2 Exquisite appearance Mini design is both fashionable and practical and its exquisite appearance can be perfectly matched with various styles of bicycles 3 High quality materials Made of high quality materials long lasting and can maintain good working conditions in the sun or rain and snow 4 Easy installation Unique installation design suitable for all types of bicycles no need to worry about installationPackage includes 1 x BellNote 1 Please allow 1 2cm errors due to manual measurement make sure you do not mind before ordering 2 Due to differences between different monitors the image may not reflect the actual coloration of the item Thank you for your understanding