Incredibell Bling Adjustabell Bell: Amethyst Can be mounted on left or right side of handlebars Dome Diameter: 35mm (1.37") Omni-directional rotating top Adjustable band fits handlebars with 22.2mm (0.87") to 31.8mm (1.25") outside diameters Chrome plate brass dome bell with translucent top that refracts light. Features a adjustable clamp.