Package Include:1 x Q BellSpecifications:Features:- Small size does not take up space, big decibel sweet to remind pedestrians.- The overall effect of beautiful, easy to use, easy to install.- Exquisite packaging, a single separation, to prevent the risk of scratches.Name: Q BellsModel: T-1000Net Weight: 17.3gMaterial: AL6061 Aluminum Alloy, PP, Stainless SteelDecibel: 90dbColor: Red, BlackApply Caliber: 22.2-24mmInstallation:- 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 right.- If the roud is not clear, pls adjust the whole part of the aluminum alloy.