The Omnigrid 45mm rotary blade is used with the Omnigrid 45mm rotary cutter for cutting materials for quilting, sewing, DIY home decorating and crafting projects - it will cut fabric, paper, leather, vinyl, mat board and foam core in any direction. Always use a rotary cutting mat to protect not only your surface, but your blade. For best results, use with the Omnigrid 45mm rotary cutter; can be used with most other 45mm rotary cutters. Package includes 3 rotary blade refills.Details:Silver44mm blade size3 blades totalFor use with most 45mm rotary cuttersSteel