The toughest cutting jobs require the toughest tools, and our Premium Diamond Disc Cutter Blade is impregnated with even more diamond to provide a cutting surface that will deliver cut after cut in the toughest working conditions. Our hardest working Premium Diamond disc cutter blades, last longer and cuts quicker than the general-purpose version. In the cost vs lifetime equation, there's no contest. Compatible with the R300DCT Concrete Cutting Saw and the R300DCT+ Concrete Cutting Saw Hot pressed and higher diamond concentration delivers 10% faster cutting and longer life than our general purpose diamond blade. *Internal Testing. Engineered for aggressive cutting on both hard and abrasive masonry, hard brick, block, roof tile, pavers, stone, concrete, and steel reinforced concrete. For use on 300mm /12 in. high-speed power saws, masonry saws and low-horsepower walk-behind sawsIncludingour older 305mm/12" Disc Cutters. Specifications Dia.: 300mm Max. Speed: 5100 RPM Bore / Arbor: