2 Pieces Diamond Cup Grinder 4 Inch Concrete Turbo Diamond Grinding Cup Wheel 12 Segs Heavy Duty Angle Grinder Wheels for Angle Grinder

For the price you can't beat this. I did some insane work with these, removed mastic glue from floors in many rooms in a house. Used them wet to reduce dust, water didn't bother them. I only used 2, first one wore down a good bit, still has meat on it but the angle grinder bolt was too long to push this flat on the floor at one point. Barely touched the second one. Literally resurfaced the floors of 6 rooms. A lot more work and time but I must have saved $2k versus renting tools. Used the cheapest HF angle grinder, home made ventilation and some n95 masks. Probably spent $45 total. Point is: These work.

I used these 4-inch Diamond Cup Grinder wheels to tackle some seriously uneven concrete at my brother’s house, and wow—they absolutely ground the hell out of the floor flat! The 12-segment turbo design chewed through high spots like butter, making what could’ve been a backbreaking job feel fast and efficient. Attached easily to my angle grinder and held up like champs under heavy use.These wheels are clearly built for tough jobs. No signs of premature wear, no wobbling—just solid, aggressive grinding power from start to finish. Whether you're prepping for flooring, leveling slabs, or just handling some rough patches, this 2-pack gets the job done right. Highly recommended for any DIYer or contractor needing serious performance from their grinding tools.

It's hard to imagine getting a much better bargain than 3 of these for this price! I needed to grind a concrete countertop that was poorly done. The surface was uneven, had stucco and paint on top, and was generally a mess. Took some time to figure out the best technique to get good results; tried long, straight paths, back and forth, and ended up finding small circles to generally work the best. Used one blade for about an hour making these small circles careful to keep the blade flat to the surface. I was really impressed with how well it worked. I tried both wet and dry and found dry to remove the material a bit faster, but wet to create a better finish, so ended up using both to get the final result I was after. The first blade looks barely used when I was done. Both wet and dry made a huge mess, so plan accordingly.

I used these to rough up the garage floor prior to using an epoxy floor kit. I think they are perfect for it because it doesn't rip up the concrete, it just roughs up the surface. If you do use these just know they dull quickly and you should probably buy 10-12 of them.

I used this product to grind some chipped concrete curbing and the results were excellent. Also used to taper some edges and it did a good job as long as you’re patient. Overall, a very useful and productive tool.

I bought these with minimal expextations, to clean up a botched garage floor repair that needed smoothing prior to an epoxy application. What a surprise - these were very aggressive, and easy to use with my Makita angle grinder. I only needed one to smooth out half a garage floor. Be sure to use with eye protection and a mask.

I get about 15 minutes of grinding out of each of these wheels while wet grinding concrete. That and I didn't pay attention to the grit. 180 grit is not what you want for concrete. I have some 40 grit on order, also the el-cheapo brand. I'm curious to see how they'll work.

This work great I should have brought these along time ago