You're looking at a brand new wave shaped replacement blade, 45mm. Great for decorative cutting where consistency is required.
Circular rotary replacement decorative wave blade designed to produce a wave-like pattern on the edge of the material being cut. This blade is made of stainless steel for sharpness and durability.
For Olfa 45mm Rotary Cutter (RTY-2/DX) and Olfa Pinking Cutter (PIK-2).