I looked for those blades on line and happened to find one store in our area (Mid MO) but on line they were sold out and the store told me they used to carry them but didn't any longer. We were visiting my daughter in New Orleans and drove by a Harbor Freight so swung in and I bought 2 packages as that was all they had. I just put my first one in yesterday and I LOVE the way it cuts. Guess I'll be sending my daughter on an errand every once in a while.