Unger Replacement Ninja Stainless Steel Blades (25-pack)

Well worth it

These blades are double sided, so really, it's like a 50 pack. Each blade lasts me 2-3 jobs, then I rotate it, and it's a fresh blade for another 2-3 jobs. If you don't use the 6 inch ninja scraper, you should definitely start. And these replacement blades are worth the money by far.