This device wedges onto your counter/table top while you draw fabric through it across a series of movable blades, cutting it into strips. Theoretically. The design problem with the device is that the blades are too short to force the fabric into a cutting position, so you have to push down while pulling through. Another problem is that you have to hold the fabric in the right spot consistently to have the strip cut correctly. In short, it was difficult to use well, and was harder than just using good scissors and a straight eye. I do not recommend this product. Unless I was missing some secret, it is more trouble than it is worth.