These are Flaming Skull Decals from Parma.
These decals can be applied to anuy lexan car body.

Printed on High Quality Stretchy Clear Vinyl

One Large Skull with flames in eyes and behind-Approx. 3 inches tall
One Small Skull With flames in eyes and behind-Approx. 2 inches tall
Six X-Small Skulls with flames in eyes and behind-Approx. 1 inch tall
Two Large Flaming Skull Profile Decals-Approx. 6 inches long
Ten X-Small Flaming Skull Profile Decals-Approx. 1 to 1.5 inches long

Cutting from decal sheet