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

Using this with Makita grinder and dust cover connected to a shop vacuum. Its pretty decent. After about 100 sq feet of concrete grinding there is a bit of wear on the tips of the blades, but otherwise its pretty much in same condition. If you want more aggressive grinding get the 24 blade version. This one grinds pretty well but is on a more gentle side. Good for taking off epoxy with 1-2mm of concrete top surface. Can be used to flatten around cracks or uneven quick cement.