CRG Mirror Adapter (1") You may have seen other companies selling products that look similar to the original CRG, and wonder why the price of their high-quality, U.S.A. made product is so competitive, or even less, than a knock-off. The reason for this is because CRG is out here working smart, utilizing the best automated processes, combined with putting in an honest-day's-work to give you high value. CRG believes, if done right, they can beat anyone by making the best stuff and allowing the customer to get a great deal.Optional internal adapter kit for 1" handlebars or clip-ons.This kit allows mirror to mount to internal end of smooth bore, hollow han