DEWALT Grinding Wheel, Double Row, Diamond Cup, 4-1/2-Inch (DW4774)

Seems like it will last a good while before wearing.

Very effective for grinding down concrete. I used it to take layers of paint off outside wall. Used it for 5 days and still no wear.It needs practise to get it to work and leave a smooth finish. Its a workhorse but not a finishing tool

Purchased this item as the crew I hired to remove tile and thin set mortar on my sub floor did a poor/lousy job. Fired the crew and decided to do the job myself. When purchasing the diamond cup, I also purchased the Dewalt dust shroud which fit like a glove to my battery powered Dewalt angle grinder. Installed the diamond cup to the dust shroud and angle grinder. Low and behold, the grinder cup ate through the thin set like a hot knife in butter. The shroud which was connect to my Shop Vac removed 98% of the dust.Practically dustless. Great product (s). The only draw back on my experience was that my angle grinder was battery powered, which need recharging. If you have a non battery powered Dewalt angle grinder, you can cut through thin set and bits of tile all day.

DE LO MEJOR Y ME A DURADO , TRABAJE EN UN PISO DE 50 METROS CUADRADOS Y SE GASTO EL 30% MUY BIEN

I have surface ground about 20 square feet of painted concrete block with this wheel so far and it barely shows signs of use. It removes material quickly and leaves an smooth surface as long as you keep it moving. If you stop it will dig in fast. It creates a massive amount of dust so a full face respirator is highly recommended. If used indoors tarp and tape the area solid with a window open. The dust will fill your basement in no time flat. The dust shroud I purchased didn't help much. My 12 amp Milwaukee got hot fast since this wheel is very aggressive so it will likely burn out a cheap grinder pretty quickly. Good product.

I use this cup wheel on a very regular basis and it is awesome for cleaning and correcting masonry openings for new door and window installs. Cuts very aggressively yet leaves a nice finish. I have used my wheel hundreds of times on commercial projects and it still works great. I bought an identical replacement today because I am guessing mine will eventually die or perhaps it has slowly dulled a bit over the years without me noticing, but truth be told I can keep using my old one if I want to. Rebar does not kill it. Heat does not kill it. Hard pressure does not kill it. Caulk and paint do not clog it up. Double row is not a gimmick, it really removes a lot of material and it also helps keep you flat so you do not gouge. If your time is money, then this is the cup wheel for you. Works great on good cordless grinders too (Milwaukee for me)

Works great. Getting lots of use out of it. But you need to buy the dust shroud attachment or spent days cleaning afterwards. With the dust shroud I used it inside my house in the basement even. DeWalt shroud doesn't fit vacuum hose, but I bought a rubber plumbing (fernco) fitting with hose clamps to connect it to the vacuum hose. perfect.Doesn't do a really smooth job on concrete, but I might buy a finer one to clean it up a bit after.Cleaned up my shop floor and more. Looks great now. about 2hrs of grinding. bit tough on the knees.