OLFA 45mm replacement blade RB45-5 for the 45mm rotary cutters / knives (RTY-2/G) and (RTY-2/DX) Used for quilting, sewing and other crafts. Cuts 6 layers of fabric. This blade is made of O-7 tungsten carbide tool steel, which offers a competitive advantage in terms of blade quality. Superior edge retention Each blade is a circular, razor sharp blade. (5) blades per pack. Includes plastic container for safe storage. DISCOUNTED 25%