The Ultimateaddons 3" extender has been designed to allow you to raise the mounting point higher and to give your more freedom on positioning. This 3 inch extender can be used on any 25mm 1" ball head mounting attachment. This extender is really useful when used in conjunction with a sports bike fork stem attachment, this extender will lift the mounting point approximately 3" making it easier to see and better for positioning (especially when using a tank bag).