Gomadic Bike Handlebar Holder Mount System suitable for the Mio C230 - Unique Holder, Lifetime Warranty Cradle attaches to handle bars of any bike with tube diameters ranging from 1/2 - 1 1/8 inch (13-28mm). Unique rubber ribbed clamping system connects without the need of tools. Perfect for bikes (street or mountain) and also works great on motorcycles, ATV, 4-wheelers, golf carts, baby strollers, snowmobiles and more! Bike handlebar mounted base for the Mio C230 device. Cradle is designed to accommodate the specific dimensions (90.5 x 84.4 x 24.7 mm). Simple operation. Quickly, safely and securely installs in minutes. Tabbed T-slot secures holder to handlebar mount to prevent accidental release.