) Looking for an easier way to line up your gooseneck when hitching? Try the Backup Mirror. Easily installs to the gooseneck down tubing. Place sight decals on either side of your ball, look in your review mirror, and back up accordingly. No more twisting over your shoulder and seat to hook up. Mirror measures 7" x 9". Convex mirror made from acrylic. Powder coated. Includes mounting hardware and instructions.