The Omnigrid 28mm rotary blade is used with 28mm rotary cutters for cutting materials for quilting, sewing, DIY home decorating, and crafting projects. This rotary blade will cut fabric, paper, leather, vinyl, matboard, and foam core in any direction. The blade is made with high-quality tungsten steel and provides maximum sharpness. For best results, use the Omnigrid 28mm rotary cutters. Most other 28 mm cutters will also work with this blade.