Review on 7" Diamond Grinding Wheels For Concrete Or Masonry, 24 Turbo Segments, 30/40 Grit, Medium Bond, 5/8"-11 Arbor by Jim Worthington

Like other reviews mention,get some sort of mask or respirator.I used this on a 3ft x 6ft addition I added to our patio.I made the mistake of making it very course and it had rocks sticking up to add traction.It was to the point you couldn't step on the slap without shoes it was so bad.I bought this and in about 20 minutes the slab was smooth.It does kick up a lot of dust and debris, so a face shield would be i deal with a n95.