●(High Quality Aluminum Alloy Material) Made of high strength aluminum alloy and ABS material, it is durable, rust resistant, corrosion resistant, and long lasting ●Sound Quality: We strive to provide the best sound for your tones, volume, and length of sound, so that you can hear it securely, and also have good sound quality ●【Hidden】Small invisible Q-bells, save space for handlebars ●【ATTRACTIVE 】Q-shape fashion design makes your bike look more beautiful and unique ●[Range of application] Fits handlebars for mountain bikes and road bikes with 0.9 - 0.9 inches (22 - 23 mm) in diameter