The MILWAUKEE Universal Fit OPEN-LOK 3-Piece Metal Oscillating Multi-Tool Blade Variety Pack contains blades ideal for cutting a variety of soft to extreme metals, wood, nails, PVC, drywall, and more. The included Titanium Enhanced Carbide Teeth Blade is designed to last up to 50X longer in extreme metals compared to standard bi-metal blades. The Carbide Teeth are ideal for cuts in screws, bolts, metal pipe, nails, and more. The Titanium Enhanced Bi-Metal Blade uses premium high-speed steel and lasts up to 15X longer than standard high carbon steel blades. The bi-metal blades have a slightly wider cutting width than most standard bi-metal blades and a longer blade body for a longer reach and deeper plunge cut. A combination of tooth design and material provides better soft metal cutting performance. These bi-metal blades are ideal for smooth cuts in soft metals, wood, nails, copper pipe, PVC, and drywall. This oscillating tool blade variety pack is designed and made in the USA with global materials.