Made of aluminum alloy and ABS, new sleek and sexy design make the ugly bells to a thing of the past. It fits 22-24 mm handlebars, can be instal on almost all cylindrical bars. Just pop it over, give it a quick tighten up, and you're good to go. No sliding down the handlebars, no dismantling and re-assembling. Order it today and don't forget to add your logo on it.