You are Buying a brand New And Factory Sealed DIABLO Model #DS0614BF5, 6 in. 14/18 TPI Steel Demon Bi-Metal Reciprocating Saw Blades for Medium Metal Cutting (5-Pack). Diablo's next generation of Steel Demon reciprocating saw blades with Full Contact Arched Edge Design are specifically designed for maximum performance in metal cutting applications. The blade's Full Contact Arched Edge Design with ultra hardened cutting edge provides faster cuts in fewer passes resulting in less heat build-up to deliver 5X longer cutting performance than those of standard blades. Dual Tooth design features a double tooth configuration with small gullets for faster material removal and extra durability. Full contact arched edge design for faster cuts in fewer passes resulting in less heat build-up to deliver 5X longer cutting performance Dual tooth design for faster material removal and extra durability Perma-SHIELD coating protects the blade from heat, gumming, and corrosion 1 in. Demolition body for straighter cuts with less vibration Ideal for medium metal cutting applications with a 3/32 in. - 5/16 in. thickness Red reciprocating blades are a registered trademark of Freud America, Inc Compatible with all corded and cordless reciprocating saws Ideal for medium metal cutting from 1/16in-5/16in Up to 5x the Life of Standard Bi-Metal Blades.