F.A.B.O. windshield decals
More than likely these will come with an outer paper alignment sheet along with the backing for the adhesive side. You just peel off the backing and position it and smooth out with a credit card. After all the bubbles are worked out you carefully peel off the outer sheet. An easy way to make sure it goes on straight and centered is to spend a few minutes with a tape measure and some masking tape. Apply the masking tape to the INSIDE of the window and align the windshield sticker on the OUTSIDE so it goes on right.
BTW: I'll take two please. One will look good on my black Matco tool chest at work :D