Tackling a concrete floor prep job, grinding stone, or removing thick epoxy coatings? This 4-inch turbo diamond cup wheel is a workhorse. The 'turbo' segment design provides aggressive grinding action while allowing for better dust removal and cooling. It's made with industrial diamond abrasive for long life on tough materials. Best of all, it comes with a 5/8-inch-11 thread adapter included, so you can mount it directly onto a standard angle grinder. The model is AT-3TFC0414A2+ADAPER from Advanta. Perfect for professionals or serious DIYers smoothing concrete slabs, leveling high spots, removing paint or glue from floors, or shaping stone. Be sure to wear proper safety gear (face shield, respirator, gloves) as it creates immense dust. Also includes the standard California Prop 65 warning about chemicals. The right tool for heavy-duty surface preparation.