The blue stencils have a usable space 1.5 inches high and 3.25 inches wide. If you are Etching the vehicle VIN on the glass, this gives a nice margin of safety around VIN image. This is a convenient way to replenish your VIN Etching supplies. We include a pack of 3,000 stencils and a five-pack of Etch Cream daubers. Optionally add Window Warning Decals. This should be enough to etch up to 400 vehicles.