I was so excited when I received the variety of sanding discs for my 5 inch Black & Decker sander. We're renovating our house and have occasional projects (like updating an old plain table) so we use a lot of sanding tools. The cotton (or whatever) on the back of these discs is minimal. I attach the disc to my grinder and it flies in about 2 minutes. After that it doesn't last anymore. My grinder is clean/no damage to the disc attachment points so I know it's discs (I've tested other discs and they hold up great). This will give you about 2 minutes of good polishing. After that you have to super glue the discs or press the grinder hard against what you are grinding to keep the discs from flying off.
KSEIBI 686012 4 1/2 Inch Flap Disc 80 Grit Aluminum Oxide 10 Pack Auto Body Sanding Grinding Wheel.
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