I personally Guarantee your satisfaction with all of our Diamond Blades, Core Bits and Diamond Wire. My name is Richard Rice and worked my way up from rough framer, in 1969, to CEO of Patriot Diamond today. Manufacturing locally and partnering worldwide allows Patriot to produce and sell the highest quality products at the lowest cost. Nobody knows this business better then myself and I mean Nobody. These are but a few reasons to trust that Patriot Diamond will always deliver the Highest Quality Products and Service at the Lowest Cost.