The basics Circular rotary pinking blade designed to place "teeth" on the edge of fabric to reduce raveling and to add a unique edge to any project. The benefits This blade is made of high quality tungsten steel for unparalleled sharpness and superior edge retention. The uses Very popular with crafts and memory book development. Also great for use with Polar Fleece! The bottom line For Deluxe 45mm Rotary Cutter (RTY-2/DX).