https://www.thecamcompany.com/product-page/replacement-blades-for-kn30-and-kn40-cutters-10
Replacement Blades for KN30 and KN40 Cutters (10) | The CAM Company
Replacement blades for KN30 and KN40 2 cutting edges 10 blades per pack Unparalleled sharpness Superior edge retention
replacement blades