Diablo, 5 piece, carbide, reciprocating blade, set promo, consists of: 3 demo demon blades for nail embedded wood, 2 steel demon blades for metal cutting & bonus blade, high strength alloys, cast iron & stainless steel, combination carbide reciprocating blade set allows pros to blaze through nail embedded wood with amazing ease to facilitate fast teardowns of walls & framing materials, slice through metal so you can quickly dismantle a variety of pipes, bars & beams up to 1/2" thick, high performance delivers unmatched 50x longer cutting life, greater durability in cutting applications & oversized body height for straighter cuts with less vibration.