This OLFA replacement rotary blade is made for 60 mm cutters when you need longer, heavier cuts on quilting and craft materials such as cotton, wool, and vinyl. One 60 mm (2.36 in) tungsten tool steel blade is included to replace a dull blade and restore clean cutting performance for long, clean passes. Swap blades with the cutter locked, handle only the center hole, and store used or spare blades in a protective case.