Brake lever guard bar end bolt size for Driven clip-ons

[Csorin]

Hey guys,

I'm trying to transfer my brake lever guard from the stock bars to my new Driven clip-ons. The bar end bolt does not fit. Anyone know what size replacement I need to find?

This is the type of piece I'm referring to:

Barkbusters B-027 Bar End Mounting Insert Kit for Hollow 14mm Inner Diameter Handlebars | TwistedThrottle.com