Package Include:1 x Bicycle Ring Bell1 x Gasket2 x StickerSpecifications:Features:- Easy to install.- Made of AL6061 aluminum alloy material, which is very durable and can stay useful after a long time use.- Q-shape fashion design, make your bike look more beautiful fashion.- Lightweight, compact design, safe and easy to operation.- Fits for 22.2-31.8mm handlebar mountain bike and road bikes.- Up to 90db decibel sound, make a extremely clear and crisp sound with the flick of a finger.Material: Aluminum Alloy / ABS / PPColor: Black, Silver, Gold (Optional)Size: 38.5*15mmFit for Handlebar Size: 22.2-31.8mmDecibels: 90dbPackage Weight: 38gInstallation:- Use cross serew driver take off the serew cap.- Open the breach of the ring and assemble on the handle of bike.- Adjust the positio of the bell and ring it, avoid the touch of aluminum alloy.- Use cross serew driver fix the bell.Note:- During the assembley and usage, pls don't move the aluminum alloy from left to ri