Bosch RSM7X2 25P 7-Inch 8+10TPI Metal Cutting reciprocating Saw Blades - 25 Pack Metal blades are color-coded light blue for easy identification 5 tilt angle for faster cuts, longer life and overall improved performance 2x2 tooth geometry (8+10TPI) cuts 20% faster in metal on average than leading competitor blades 1? blade height and thicker body for straight cuts with less vibration Bi-metal composition for longer life