This is exactly what it is. Plenty of sizes and well constructed to use for years to come. I use it as a template to paint 1/24-25-32 whitewall tires. It's a tad tricky but with practice the results are pretty good.
I was hoping that this circle template would provide many good stencils for painting vehicle wheels, hubs and afv road wheels and it sure is great template to have on the modeler bench. The circles on the template are perfect for the job. Works with numerous scales such as 1-35, 1-48 and 1-72.