Choose from a variety of blades that meet your crafting, quilting and paper crafting needs. Blades are long lasting with a razor sharp edge in a convenient, reusable package for prolonged blade life and convenient storage. 45mm Straight 5pc- Comes with a multiple blade storage case. Razor edge provides a smooth clean cut on all types of fabric. Use only on fabric to maintain sharp blade edge. Works with Fiskars 45mm rotary cutter and most other brands. Always use a cutting mat to protect your work surface. Also works with Rotary Paper Trimmers with 45mm blades.