Walter 15R454 ENDURO-FLEX Abrasive Flap Disc [Pack of 10] 40 Grit Finishing Disc

These work very well for sharpening lawn mower blades. They are not so aggressive that they get the blade hot but instead allow a controlled removal of material.

If you do the math you realize how pricey these are. But they seem to me to be quite durable and worth the spend.

Great product well made and worth the money

Some of the best quality discs for the money. Walter has knocked it out of the park in designing these flap discs. While I prefer the spin on version the amazon price for these was much better than the local welding supplier. They last forever and take down material quickly. You won’t be disappointed

I can't say enough about how well these disks perform! All my welding projects are actually being completed much faster as less time is being spent on prep and cleanup when needed. They last a good long time and are easy to trim the plastic away to reveal more metal-eating abrasive flaps.

Outstanding product been using for 6 months and I've only used one, most of the other grinding wheels I've used would have wore out 3 times by now

I won’t do ANY grinding without these discs. They’re magic! Well worth what you pay for them

Just ok, not as long lasting as I would of hoped for. Flap discs just don't last long for me. The flat disc last 3 times as long I have found. The hard threaded plastic is nice!