If you want to save money and the crack doesn't bother you, you can do the following to stop the cracking extension:' N; |) |8 s8 L \
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(1) Buy a set-tube Epoxy (come with twin-tube to mix) at auto parts store or homedepot8 E: L, @2 G! n
9 x" [# n0 k, E& }$ U(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. 6 x3 l8 y- J0 }6 n# B+ y 9 M6 \: p" q& s( z+ ]& o(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.