Convex mirrors with automotive-quality glass. 6061 T-6 aluminum CNC-machined billet construction. Black anodized or silver finish with stainless hardware. Rubber mounted to reduce vibration. Will fit most handlebar/clip-ons with an outer diameter of 7/8" (requires 3/8" of bare bar outboard of the grip/throttle assembly). Optional internal mirror adapter kits allow mirror to mount to internal end of smooth bore, hollow handlebars; 7/8” adapter PART #0641-0013 I.D. range: .475” min. to .750” max. and 1” adapter PART #0641-0162 I.D. range: .720” min. to .876” max.. Blindsight mirror intended to be used in conjunction with left-side mirror or stock mirrors to help reveal blind spots. LS (lane splitter) version is retractable/folding. Sold each. Made in the U.S.A..