Bosch RFM10V 5-Piece 10 In. 9/12 V TPI Flush for Heavy Metal Reciprocating Saw Blade Designed for clean cuts in metal 1/8 In. to 5/16 In. thick Patented 9/12 TPI variable Tooth Geometry for fast, clean cutting in thicker stock Tapered .035 In. body provides easy starts and flush cutting capability Bi-Metal construction for durability and long life 5 piece pack Metal blades are color-coded light blue for easy identification 5 tilt angle for faster cuts, longer life and overall improved performance 1? blade height and thicker body for straight cuts with less vibration Bi-metal composition for longer life