Simply attach a bell to the Topeak UTF Mulit-Mount (Handlebar or 4-Bolt Stem version) for a discreet addition to your mounted smartphone or cycle computer. This bell will provide a pleasant and clear ring tone to alert others of your presence when needed. It makes for a charming companion on all your cycling adventures.Made from a combination of bronze, stainless steel, and engineering grade polymer, this bell is both durable and stylish. It is compatible with the Topeak UTF Multi-Mount, which fits handlebars with a diameter of 25.4-31.8mm, as well as 4-bolt stems.The bell measures 7.2 x 6 x 5.6 cm (2.8" x 2.4" x 2.2") and weighs 64 g (2.26 oz).