DEWALT DW8311 4-1/2-Inch by 5/8-Inch-11 36 Grit Zirconia Angle Grinder Flap Disc

Welder must have. These are great,and work great for sharpies lawn mower blades as well.

Have gone through a few projects using this flap discs. These discs cut through rust with no pressure and will cut through mill scale with a few passes.

Works great for sharpening lawn mower blades, without being too aggressive…

Great item, works as directed. One thing I could not find on the disk is the expiration date. I thought all discs had them.

These are excellent.

Bought this to sharpen my mower blades, based on a YouTube video I saw. These work so much better than a grinding wheel. Fast and easy sharpening, wish I had bought these years ago.

Used to get clean finish on an edge. Works good.

Ive tried to sace money using less expensive brands but I end up have to change out the disc more often which at the end I spend more money. This dewalt disc is definitely worth the money

Im writing this review because I tried the alternatives. I wanted to strip the paint off my deck (I didnt paint it), and started with the deck stripper chemical (which did well). For the parts coated too thickly with paint for the stripper to work, I tried various wheels that attached to my drill (ineffective), the random orbit sander (blew through discs and wouldnt fit everywhere), then the angle-grinder sanding discs with a separate quick loading adapter (flat discs were too hard to control). This 120-grit disc took off just the right amount of material (a bit more aggressive than 60 grit on a random orbit sander) without a lot of scratching. It lasted through everything I wanted to sand: especially all the vertical surfaces under the deck and stairs, and between balusters. Really useful and efficient.

I like these but the life span of good grinding seems to be short for the price paid. The benefit though is the ability to grind without grinding hard flat points into the material. With practice you can follow the natural contour of the metal you are grinding. Use these when you want to shape or clean off the surface; used the solid grinding wheels when you need to grind down to get the final shape before using these disks.