These hot new items are CNC machined from 6061 T6 Billet Aluminum & "Show Polished". These "Diamond" style Side-Mounted Rear View Mirrors are adjustable side to side & up & down as a mirror should be. They fit your tubing and are held securely with four Stainless Steel screws. The convex mirror offers a greater field of vision for added safety. This Billet Mirror is roughly 4-1/2" X 6-3/4" with a 4-1/8" X 5-1/2" convex viewing area.