I was at Harbor freight today, purchased carpet cutter blades brought them home and got my cutting board out and cut a piece of fabric and was really surprised at how well it cut. For $1.98 for 2 blades i will be buying more.I priced the real blades last week and they were $9.99 for 2 blades. They are near the back of my store on the right hanging on peg board .The pkg is yellow and says replacement carpet cutter blades.The card is about the size of a business card ,kinda hard to spot. I also purchased the rubber mat it locks together, it was only $7.00.My first trip to harbor freight, but i will be going again.