The 45mm Wave Rotary Blade has a stainless steele blade for sharpness and durability and is designed to produce a wave-like pattern on the edge of the material being cut. Perfect for a variety of projects including quilting, sewing, crafting, and creating a finished edge on fleece. For use on the Deluxe 45mm Rotary Cutter (RTY-2/DX) and Pinking Cutter (PIK-2). 1 blade per pack.