The Basil Portland Bell Brass is an original bicycle bell from Basil. It makes an instant impression and its pared-back aesthetic lends itself well to all types of bicycles. With a 55 mm diameter, this bell emits an audible sound when rung, making it ideal for alerting your arrival to other cyclists, pedestrians and other road and path users. Easy to mount and fix to your frame, you’ll have no trouble with this essential cycling accessory.