The "Hindsight" mirror glass is custom convex formed to CRG's 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. The glass is rubber mounted to resist vibration. All pieces are precisely CNC machined from aircraft grade 6061-T6 billet. Perfect for your vintage or modern motorcycle. The "Hindsight" has a 3" mirror. Lightweight but sturdy construction allows the Hindsight Mirror to be positioned for optimal viewing without concern of movement during high speed runs or excursions over rough roads. Fully modular assembly, making all parts replaceable. Further, the extension elbow is reversible to allow for either left / right side use. All stainless hardware. Standard finish is black anodized.