What are the sizes and do they fit your rotary cutters? Found out in the thread sizes they fit. Hubby goes there all the time and if he can't and I am in town I go there for him. Will have to get some. Thanks for the post. We live 85 miles from the nearest Harbor Freight, so maybe no one around here knows about it yet. lol Have a friend going tomorrow so will have her stop and get me some. I think I will try the carpet cutter, since it is so cheap and see how it works.