Four Corners Sourcing Clip-On Tow Mirror -
Extend your vision without blocking your existing mirrors.
Rubber straps hold 7 1/2" x 5" fully-adjustable mirror securely to your existing mirror, extending your field of vision for safer towing, passing, lane changes and backing. Weather-resistant plastic construction. Easy to install, with no tools required. Arms adjust to fit mirrors from 4 1/2"D to 7 1/2"D. Easily removable when not towing.