They are not carried at Harbor Freight for sewing.
They are carried as replacement blades for rotary carpet cutters.
They are hung on hooks with the rotary carpet cutter itself that has blades included, and then as packages of 2 blades as replacements for that cutter.
Just so happens they fit our quilting rotary cutters!
Originally Posted by Nell
I went to Harbor Freight this week, as I had a coupon. However, the salesgirl never heard of 45mm rotary blades used for sewing. I looked through the entire store and couldn't find any, either. I just ordered a ruler with a sharpening edge for rotary blades, and I'm going to see if that works.