The special Bar End will mount to the inside of all hollow Handlebars, the 7/8" turned section will permit mounting of the Oberon Performance Handle Bar Clamp Mirror.
This bar end effectively gives you an extra portion of handlebar to mount your mirror on without the need to move your controls. The other advantage means that this type of mounting adds less width to the handlebars than bar end.
To see which size you need, simply remove your existing bar end weight, measure the internal diameter of the handlebars and select the size(s) best suited. Full installation instructions are included with every purchase and technical support and advice can be sought directly from Revival Cycles.