The female thread inside the bar end of convertibars is so much deeper than my ThrottleMeister bolts. The bolts are metric M6 - 1.0 thread flat head socket cap screws. The ThrottleMeister bolts are 60mm long and I needed 80mm for them to reach the female thread inside the Convertibars. Nobody has them. I finally found them at http://www.fastenal.com and they have local stores everywhere. The customer service is topnotch. I called a local store on the phone and ordered 2 to be picked up locally and they did not even ask me for my VISA. They just took my name and ordered them for me.

This is the only drawback of the Convertibars. There is no reason for the female thread inside the bar to be this deep. They should at least provide some adapters or long bolts as there are no bar ends with that long of a bolt. If they are any deeper, the Convertibars would be unusable, because the longest 6mm bolt available is 80mm and it barely reached the female thread inside the bars to reinstall my bar ends. Nobody in the world make a 6mm bolt longer than 80mm. Again, may be it's my bar ends as mine are ThrottleMeister's heavy duty bar ends and they are longer than stock.