Is it like this one?
http://www.amazon.com/Rockwell-RC260...dp/B003BEAOSK/
If so, it's great for cutting apart jeans for jeans quilts (really saves your hands!) and also for rough cutting. Some seamstresses use it to cut out patterns. However, it does not have enough accuracy to cut pieces for quilting. It's great for rough-cutting, but not for accuracy.