Diamond Ripper rescue saw blades are intended for use on gasoline engine powered saws that have 1" or 20mm diameter arbors. Standard blade diameters are 14" (5460 RPM rating), 12" (6300 RPM rating), and 16" (4725 RPM rating). The Diamond Ripper is a new high performanceblade for breaching operations. It offers industry-leading features including a thin double-layer diamond cutting edge that yields quick cut times, an aggressive texture to shred materials typically cut with carbide-tipped blades, and a nickel alloy matrix that secures the diamonds to resist erosion and provide superior wear resistance. And Diamond RipperTM rescue blades are economically priced for cost-effective performance. With the Diamond Ripper there is no need to: change blades between cutting metal and other materials choose between long blade life and fast cutting speed compromise high inertial force vs. blade flex and binding pay high prices to get top quality The Diamond Ripper cuts steel, aluminum, concrete, wood, poly-carbonate and more for forced entry. Diamond Ripper combines the best elements of the quick wearing abrasive discs and expensive, heavy tungsten carbide edged blades. The double-layer brazed cutting edge assures aggressive cutting on tough materials, long blade life, and smooth performance to reduce fatigue. The blade's light weight means less gyroscopic effect and more control. The diamond electroplated facing protects the core, reduces heat, and prevents binding.