The Incredibell Clever Lever has a very pleasant double ding sound. The unique lever can be pivoted to any position so it can be easily reached by the thumb or another finger. - Dome Diameter: 38mm (1.5") - Fits handlebars with 21.7mm – 26mm (.86" – 1.02") outside diameters

Mirrycle's Incredibell Brass Duet makes a traditional ding-dong dual-tone ring with the beautiful resonance of solid brass. Plus, its compact size lets you mount it just about anywhere on your handlebars. - Dome Diameter: 33mm (1.3") - Fits handlebars with 21.7mm – 24mm (.86" – .95") outside diameters

Mirrycle's Incredibell Brass Duet Colors makes a traditional ding-dong dual-tone ring with the beautiful resonance of solid brass. Its compact size lets you mount it just about anywhere on your handlebars. And, the bell's vibrant colors add a splash of personality to any bike. - Dome Diameter: 33mm (1.3") - Fits handlebars with 21.7mm – 24mm (.86" – .95") outside diameters

The Mirrycle Jellibell is a fun way to let pedestrians and other riders know you're coming! The Jellibell has a see-through top so you can see the gears spin as it rings. It's weatherproof, too! - Dome Diameter: 48mm (1.9") - Fits handlebars with 21mm – 22.5mm (.83" – .89") outside diameters

Announce your presence with Portland Design Works' Alexander Graham Bell. Built to replace a 10mm 1 1/8 headset spacer, this bell is a classy addition to your rig without sacrificing any of your precious handlebar real estate. - ?Polished brass bell  - Replaces a 10mm 1 1/8" headset spacer - Quick-reflex alloy clapper - Lifetime PDWarranty