We manufacture 2.5" - 72" blades, .25" - 72" core bits, grinding/polishing diamonds, for any residential/commercial/industrial saw, drill or grinder, any horsepower. I supply diamond tools to the US Navy, A-Core Concrete Cutting, and my company has made Penhall's Hawaii division the most profitable in all of their company."I expected to burn up 3 blades on this job, and I barely used 1!"-Sickenberger, Cameron NAVFAC NW, "I cut concrete, asphalt, bunched rebar and that 14" handsaw blade lasted 5,800 in/ft !" -Southern Comfort, AR"I've never seen a blade cut like that!"- S & D Construction, MI"These are excellent tools. Really, really, good."VMO Concrete, Dominican Republic"My guys said it cut too fast. I don't see why that's a problem."G & G, TX