The Olfa Cutter replacement blade is used only with Olfa Cutters. It fits Olfa Cutters RT2YG or RTY-2DX depending on the type of fabric and the amount of use.
If the blade is skipping when it cuts, it is time for replacement.
The 45mm blade is designed to cut more thickness of fabric, more heavy-duty fabric, bias strips and quilting.
*Includes two blades.