All diamond tool manufacturers will tell you that if you use vast amounts of the very best diamond and metal powders in the segment manufacturing to produce core drill bits and blades, they just will not work, but by using the radial system to cut down the surface area contact in segments the impossible becomes a reality with outstanding results, 30% to 60% higher penertration and in some cases 30 to 40% better life over traditional manufactured blades This product has a world wide patent