If you want to save money and the crack doesn't bother you, you can do the following to stop the cracking extension:$ N, m1 f/ A% W' M
) U" n4 U% w: a) V(1) Buy a set-tube Epoxy (come with twin-tube to mix) at auto parts store or homedepot3 q+ q# D a8 c2 c5 J
. s4 |/ f; N& V4 l) T
(2) To buy a round or square think-glass-disk with diameter or side length of 1 inch. If you can't find it, you can go 99 cents stores or dollartree to buy a large-clear-cloth-button at similar size.5 U$ u4 O! [8 ?# _) [
2 G8 u: N! W% F s4 T(3) Prepare Epoxy well, spread the paste to one side of the glass or button, attach it to the crack-upper-end from inside of windshield. Wait for 24 hrs. It'll be as solid as a rock and permanently stop the crack extension.