I use a die-grinder with 3" x 1/16" disks for a wide variety of jobs. Recently, I left my stash of disks at another location and had to get some quick. I got some from Harbor Freight, but was unsure of the quality, so just got a few. I am finding that they cut better and last longer than the "name brand" ones I have used over the years! The only issue was that they are for a 3/8" arbor, so I had to make a bushing to adapt them to my 1/4" stuff; well worth the effort considering that they work well, cost less, and are readily available.