Master Mechanic, 2 Pack, 6" x 18 TPI, Bi-Metal Reciprocating Saw Blade, 1/2" Shank, Wood Taper, Cobalt & The Matrix II Cutting Edge Greatly Reduces Heat & Wear Resistance When Cutting In Wood & Metal Applications, Designed To Cut Stainless Steel, Wood, Pipe & Conduit, Carded.