Dafa 45mm Crochet / Wide Skip Blades, 2 Perforating Rotary Cutter Blades Per Pack 45mm Crochet / Wide Skip blade for rotary cutters, compatible with most cutters (Fiskars, Olfa, DAFA) High-quality steel maintains cutting ability over time on a variety of materials and fabrics Great for crafting, quilting, and sewing projects. 2 Blades per pack. Comes with a protective plastic case.