The SpeedWave Diamond Blades cut cured and reinforced concrete, roofing tile, brick, and other masonry materials. A wave-shaped ridge along both sides of each segment reduces blade friction and drag, also helping to clear dust faster. The blade's cooling disc uses the blade's rotation to draw in air and evenly cool the blade surface for long life. The cooling mechanism also helps absorb vibration for a smooth cut. Bosch Power Tools & Accessories. 877-267-2499.