The Porter-Cable 12810-10 7-1/4-Inch Riptide Circular Saw Blade has a thin kerf that reduces the drag on the motor for more efficient cutting. The 12810-10 lets you get more power out of your saw and faster, smoother cuts. The Riptide Circular Saw Blade has fine-grained tungsten-carbide teeth to help the blade stay sharp for a longer period of time. Even though this Circular Saw Blade is thinner than standard blades, the body is fully heat-treated for stability and precise cutting. Features: Computer-mapped cooling vents to maintain trueness — no warping Each tooth is ground on all four exposed sides for maximum sharpness 8300 RPM