They work just as well as any you can buy at JoAnns. And I don't feel so inclined to delay changing blades. I just ordered more and was delighted to learn that they were only $1.79 a 2 pk. Online orders shippng is ridiculous tho..$8.99

I would suggest that you call your local HF before you go because they could be out of them. I ordered 10 packages at $1.79 each. They came just today so I haven't had time to try them yet but will tonight. And someone made a mistake in counting them & I got 11 packages instead of just 10! I didn't mind the $8.99 shipping because they still were less than $1.50 a blade. Where else can you get a deal like that? I hope they will fit my Martelli cutter. If not, I have other cutters that they will fit, I'm sure.
Mary Louise in OKC

We have a Harbor Freight coming to our area and I can't wait to try the blades.

The blades work in the Martelli cutter. Even seem to be sharper than the regular blades. Just my opinion.

Forgot--just purchased 25 packages to put in the "goodie bags" for our fall retreat. The one I have in my Martelli cutter has been in there for several months and is still sharp as the day I put it in.

I love mine.

I didn't know that they have them. I go in to Harbor Frieght with my husband all the time for tools! Who would have thought!!! Gee had I seen this message 3 days ago, I would have order a set from Connecting Thread!

are these blades long and square or is they are rotary blades didn't see anything like that are they called carpet knife blades the brand is gordon in a plastic dispenser

Don't mistake the "rotary carpet blades" for the standard rectangular carpet blades...not the same at all. The rectangular ones are a razor knife, & would probably cut your mat up pretty fast.

They are called carpet cutting blades. Two to a pack! Work great.