Lenox Gold, 5 Pack, 156GR, 12" x 3/4" x .050, 6 Tooth, Bi-Metal Reciprocating Saw Blade, For Rough Work In Wood, Blades Are Shatter Resistant Because The Bi-Metal Technology Flexes & Resists Breaking, Long Lasting Blades Tuff Tooth Design Is Reinforced With Titanium Coating To Cut Stronger & Last Longer, Designed To Attach With Unique Blade Geometry Which Positions The Blade For Optimum Cutting Performance.