The Blindsight Bar End Mirror is intended to be used in conjunction with a left side mounted Hindsight or stock mirrors. This little assembly will clean up any blind spots in your rear and side view. We use custom convex glass formed to our own specification to give you the perfect balance between field of vision and image magnification. To reduce glare, the glass has an automotive quality mirror tinting. Rubber mounting helps the glass resist vibration. 6061-T6 Aluminum CNC Machined Billet Construction Black Anodized All stainless hardware. Fully modular assembly; all parts are replaceable. Will fit most handlebar/clip-ons with an outer diameter of a 7/8” (requires10mm (3/8”) of bare bar out board of the grip/throttle assembly) Optional Billet internal Bar End Mirror Adapter Kit will allow internal mounting on virtually any handlebar/clip-on