Concrete Saws are power tools used for cutting concrete, masonry, brick, asphalt, tile, and other solid materials. They can be a small hand-held cut-off saws, Road Saws and other styles. They maybe powered by gasoline, hydraulic or pneumatic pressure, or electric motors. The saw blades used on concrete saws are often diamond saw blades to cut concrete, asphalt, stone, etc. Abrasive cut-off wheels can also be used on cut-off saws to cut stone and steel. The significant friction generated in cutting hard substances like concrete usually requires the blades to be cooled to prolong their life and reduce dust.