I ordered this to cut hole in fabric for 1/4" grommets.  It doesn't work.  Hole cutters for fabric need to be really, really sharp.  This one isn't.  If I hammered it 6 times it would only leave the impression of the ring.  I used that impression for a guide to cut the fabric with precision scissors.  These grommets spaces were too large to crimp around the fabric.  Luckily I had some Dritz grommets in the sewing drawer.  I used those instead.  The one part of this package that did help was the grommet setters.  That part I could use and the grommets fits nicely into the fabric.  It would probably be good for tarps, plastics, etc.  But it is not good for polyester fabrics.