Master Mechanic, 2 Pack, 3" x 18 Tooth, Bi-Metal, Bosch T Shank Style, Jig Saw Blade, Milled & Set Teeth For Maximum Performance, Bi-Metal With Cobalt Content & Matrix II Cutting Edge Greatly Reduces Heat & Water Resistance When Cutting In Wood & Metal Applications, Designed To Cut Hard Or Soft Wood, Plastic, Soft Metals, Stainless Steel & Conduit, Carded.