Joker Machine Banjo Adapter - 7/16" - 3/8-10 03-139

These easy-to-use adapter sleeves allow you to install hand controls designed for 1" diameter handlebars, onto 7/8" diameter handlebarsDurable non-marring polymer plastic design prevents scratching...

You need one adapter for each mirrorOEM metric bike controls adapterMade in the U.S.A.