This is a great investment (but you really need the coluzzle mat and swivel blade for the best results!!). The biggest circle is almost 4.5" in diameter and the smallest circle is slightly under 1" in diameter. There are 8 sizes total. This is the only circle template (I've tried others) that I will use for these size circles. Easy to use. Take the thin plastic covering off of BOTH sides of the template when you first get it (not always easy to notice if you're not aware they're there--if you miss one it will make cutting harder!), line up the clear template over whatever you're cutting to find which size circle is best, put all that on the foam coluzzle mat and cut with the coluzzle swivel blade (using the blade almost exactly vertically gives the easiest cut). Snip the little uncut spots with small sharp scissors and voila! You'll use this over and over for all those circles that are so popular!
This circle cutter is so easy to use. The template is clear plastic so you can cut the circle with exact precision every time. I love that I know exactly where I am cutting-takes away all the guess work. THe knife is simple to use and it moves with such smoothness. I really like using this template for all my circle needs.
Use this with the Coluzzle swivel knife and cuttingmat and you're all set to cut out circles in a bunch of different sizes!
A tip is to turn the template 90 degrees after the first cuts are made and then align and cut again to get your full circle. Of course you can also just cut with the swivel knife and then cut the little strips left with a pair of scissors if you like. :)