DEWALT 1-1/4 In Carbide Oscillating Tool Blade (2 Pack). The DEWALT DWA4250-2 1-3/8" Carbide Oscillating Blade features premium carbide teeth for long life in tough applications. This blade is a general purpose blade designed for cutting a variety of hard materials. The DEWALT Carbide Tooth blade offers UNIVERSAL FITMENT which allows for use in most oscillating tools. This is a 2-pack of blades