OLFA Blades RB45-5 Model 9460 are 45mm replacement blades for the 45mm rotary cutters RTY-2/G and RTY-2/DX. This blade is made of tool steel, which offers a competitive advantage in terms of blade quality. Each blade is a circular, razor sharp blade. Perfect for general quilting, sewing and craft projects. Can be used in industrial applications. 5 blades per pack.