Master Mechanic, 2 Pack, 12" x 6 TPI, Bi-Metal, Reciprocating Saw Blade, 1/2" Shank, Wood Taper, Cobalt Content & Matrix II Cutting Edge Greatly Reduces Heat & Wear Resistance When Cutting In Wood & Metal Applications, Designed To Cut Stainless Steel, Wood, Pipe, & Conduit, Clamshell Package.