I wouldn't recommend using a rotary cutter. But I guess if you don't have the proper fabric cutter you could trace or draw and cut. I'll post a picture of the die out of the package tomorrow.
These are dies that are made for the accuquilt go. You put fabric onto die and cover then crank thru machine and it cuts out perfectly the circles. No rotary cutters needed. These machines are so neat!! You can cut up to six layers at a time. You can go on to utube and see them demonstrate how it works!!
Thank you for explaining, I just figured people knew what these were for. Sorry about that everyone. I owned two of these about 4 years ago and auctioned both off here on Listia. They are very very neat and a must if you quilt! Thanks for clarifying!