These bags tear at the seam before they are half full. I had sawdust everywhere. I would rather not collect dust than use these bags. In fact, one of them broke as soon as I turned on the vacuum. I've never seen anything like this. I bought them in early January. I'm on my 5th now and this 6 pack should have lasted me at least 10 months with my normal use. I will look for the Shop Vac or Ridgid brands again. more expensive, but they do not tear. Warning: I use a 6.5 hp Craftsman vacuum cleaner. for your dust collection system. So if you have a less powerful vacuum, they MAY work for you.