Once you've dulled the blade of our 60mm Rotary Cutter on dozens of quilt projects, you'll need a replacement. Just unscrew the back of the device and slide the dull blade off. Replace it with a 60mm replacement blade and screw it into place. Then get back to what matters: precision cutting for beautiful quilts. Three per pack. This rotary cutter blade is made of high carbon steel and is ideal for cutting cloth, leather, paper & vinyl. For Havel # 32061