When I first started buying them several years ago, they worked pretty good. I was so happy to find some blades that saved me money. Then about a year ago I got ahold of a bad bunch that skipped worse than any of my old blades. I bought 10 packs the last time so I am just stuck with 20 blades that I can't use. I still thought it was just a bad bunch until I started hearing about so many of our board members with the same complaint. Needless to say that I won't be buying any more of them! lol