Don't let the half-pint stature fool you, Mirrycle's little Incredibell Brass Solo packs the beautifully resonant ring of solid brass. Its compact size and pivoting ringer let you mount it just about anywhere on your handlebars. A flick of your finger and it rings clear for all to hear. - Dome Diameter: 33mm (1.3") - Fits handlebars with 21.7mm - 24mm (.86" - .95") outside diameters