Securely mount your GPS for minimal vibration and maximum convenience.
The flat GPS Mount surface is designed to position the GPS within the rider’s
direct line of sight above the instrument panel. 
Fits SP Connect #53122.Most third party mounting devices and bracket
The GPS mount plate can accommodate GPS cradles in both a horizontal or
vertical orientation making this mount ideal for GPS devices with a screen rotation
function.The clamp suits handlebars with a diameter of 22mm (7/8") and 28mm (1 1/8").

Ram Ball Base is only for display,not included in the package.
Easy to install,without installion instruction.