Small tube of magic! Rubberized SuperGlue. Bonds to almost anything. Will hold your mirror to car windsheild in Arizona summer heat for years…My wife’s Hyundai Santa Fe is proof.
Slow drying, be any CA/SuperGlue accelerator speeds it up. Clean, glue, line up, double check, brush a bit of accelerator on the edge, let dry for a few hours.
DOUBLE CHECK the alignment before accelerator as if you mess up, you cannot “fix” it.
Small tube, 0.1 fluid ounce.