If you want to keep the edge of your fabric from raveling, you need to cut it with a pinking blade. This OLFA® blade puts those familiar "teeth" on the edge of the fabric, for a look that's both decorative and functional. For use with the OLFA 45mm deluxe rotary cutter (RTY-2/DX), pinking cutter (PIK-2) and wave cutter (WAC-2). Good For: cutting strips and multiple layers at once. Cuts fabric, paper, tarp, vinyl, upholstery and more.