Bosch RDN9V 25P 9-Inch 5/8T Demolition reciprocating Saw Blades - 25 Pack Bosch demolition blades feature an extra thick kerf for maximum control, less vibration and straighter cuts Demolition blades are color-coded dark blue for easy identification Taper back for easier starts in tough to reach applications Variable gullet depth for faster chip removal and smoother cuts 5 tilt angle for faster cuts, longer life and overall improved performance