Evolution PD300SEG-CS Premium Diamond Cutting Blade 300mm x 22.2mm x 21T The toughest cutting jobs require the toughest tools, and Evolution\'s 300mm 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. Diamond Blades last longer and cuts quicker than the general-purpose version. FEATURES Compatible with the R300DCT Concrete Cutting Saw and the R300DCT+ Concrete Cutting Saw 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 saws SPECIFICATION Diameter: 300mm Max. Speed: 5100rpm Bore: 22.2mm Teeth: 21