Ideal for nail-embedded wood, medium metal cutting (3/32 -inch-5/16 -inch thickness) and metal demolition (1/8 -inch-1/2 -inch thickness) applications, Perma-shield coating protects blades from heat, gumming and corrosion, 1 inch demolition body delivers straighter cuts with less vibration (excludes flush cut reciprocating blade), Ultra-hardened cutting edge provides utmost durability and longevity, Unique plunge tip design enables faster and easier plunging, Includes: (4) 6 -inch 14/18 TPI metal cutting (3/32 -inch-5/16 -inch) blades, (4) 6 -inch 8/14 TPI general purpose/nail-embedded wood and metal (1/8 -inch-1/2 -inch) blades, (4) 6 -inch 6/12 TPI nail-embedded wood blades, (1) 9 -inch 6/12 TPI nail-embedded wood blade and (1) 9 -inch 10/14 TPI blade, Includes: (1) 9 -inch 6/9 TPI Demo Demon nail-embedded wood demolition carbide recip blade (1) 6 -inch 8 TPI Steel Demon thick metal demolition carbide recip blade, (4) 6 -inch 14/18 TPI metal cutting (3/32 -inch-5/16 -inch) blades, (4) 6 -inch 8/14 TPI general purpose/nail-embedded wood and metal (1/8 -inch-1/2 -inch) blades, (4) 6 -inch 6/12 TPI nail-embedded wood blades, (1) 9 -inch 6/12 TPI nail-embedded wood blade and (1) 9 -inch 10/14 TPI blade