WRECKER SAWZALL Saw Blade with NITRUS CARBIDE features a 6TPI design for best material versatility and the ability to cut materials from wood with nails and screws to thick metals. NITRUS CARBIDE technology allows this blade to be the fastest cutting and longest life multi-material blade on the market. This blade delivers 2x life versus carbide teeth blades eliminating the need for blade changes when cutting a variety of materials. Ideal for demolition and remodeling jobs.