The Omnigrid 45mm Rotary Blade Value Pack is used with 45mm rotary cutters 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. The blades are made with high-quality tungsten-steel and provides maximum sharpness. For best results, use with the Omnigrid 45mm rotary blades; most other 45 mm blades will also work with this cutter.Details:Silver45 mm bladesCuts in any directionTungsten steelFor best results, use with the Omnigrid 45mm rotary blades