Specifications: Brand: ROCKBROS Material: Aluminium+PC Size: 62*48*22,8cm Volume: 100dB Applicable size: 22.2/25.4/31.8mm handlebars Colour: pink/yellow/blue/black/transparent 【Portable】The ROCKBROS Bike Bell, a portable device for cyclists, with a concealed design and crisp ring tones to make your bike ride safer and more enjoyable. 【Convenient】The compact and lightweight design and non-slip and lossless seal make the ROCKBROS Bike Bell quick and easy to install and use in any weather. 【100 dB】The crisp and loud alarm chime can reach a high decibel of 100 dB, and with a simple flick, people around you will be instantly aware of your presence, and the tailing sound is long, not harsh, bringing safety to your commute. 【Wide Application】This bike bell comes with two types of non-slip spacers, compatible with tube diameters of 22.2mm/25.4mm/31.8mm, which can be installed on different sizes of bike handlebars to meet your different needs. 【5 Colours】There are 5 cool colours for you to choose from to make your riding experience even more colourful. The ROCKBROS bike bell is not only a bike safety equipment, but also the best partner for your personalised cycling.