Clamp-on style in-bar extension. Used to install mo-view bar-end mirrors in combination with Motogadget mo.blaze handlebar end turn signals. Fits inside bars with 12mm up to 21mm inside diameter and 90mm or more inner tube length. Provides a mirror/turn signal clamping surface of 1" diameter diameter. Note: Designed for use with Motogadget mo.blaze handlebar end turn signals, which must be ordered separately. Note: See 575352 for handlebar adapter that takes the mo.view mirror only (no turn signals).