This DEWALT Extreme Runtime FlexVolt Circular Saw Blade has been designed for use with the DCS577 FlexVolt Circular Saw and features a unique diamond-shaped bore that drives the blade at a higher torque. Next-generation carbide allows up to 3 regrinds and patented grind angles allow for faster cuts at a lower force. The 1.55mm thin kerf is designed specifically for cordless circular saws that require less push force when cutting. Expansion slots help to dampen noise and reduce vibration.