Best Seller | MTB Bike Compass Bell - Mountain Bike Cycling Handlebar Ring Alarm Down Horn Accessory Material: alloy + plastic Suitable size: suitable for handlebars with a diameter of 2.0 cm and a diameter of 2.5 cm Suitable for: folding bike / mountain bike / road bike 1�Made of aluminum alloy ring tones crisp with compass can be distinguished... more | | $7.44 FREE shipping go to store |