1. always rings clear ringing for people to hear clearly, which makes driving . 2.Made of high quality metal, it is strong, rustproof and anti-aging. 3.Quick release design means easy installation and removal without tools. The bracket matches the handlebar perfectly. 4.Suitable for any standard in-line bike or scooter handlebars, mountain bikes, kids bike cruisers and more. Nice accessory for owner's bike. Colour:black+white Material:aluminum alloy Size:7cm x 6cm x 3cm Package Contents: 1 x Bell Scooter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.