4×2 folding mirrors are made to last.  Fits 1 3/4″ tubing. Manufactured for maximum strength. Can rotate to any position. Mirror glass dimesions: 4.33″ length, 2.15″ wide. Made from a solid block of 6061 billet aluminum. Available in hard black or clear anodize finishes. Assembled with cadmium plated hardware so they won’t wear out and move around. Made in the USA