Bigger Perfect Circles by Karen Kay Buckley

There are ten different sized heat resistant plastic circles
 
Circle sizes range from 2.25 inches to 4.5 inches and 2 of each size
Total 20 circles in the package.
Made from heat resistant plastic so you can use them with an iron.
These bigger sizes are great for the center of a Mariner's Compass block, Drunkard's Patch blocks, traditional applique and so much more.