The Milwaukee NITRUS CARBIDE Universal Fit OPEN-LOK Oscillating Multi-Tool Blades provide the ultimate cutting experience, delivering the fastest cutting and longest life on the jobsite. The NITRUS CARBIDE multi-tool blades deliver 2X more cuts than Carbide Teeth blades. The extreme metal blade is ideal for cutting metal fasteners such as bolts, screws, nails, and threaded rods. The free included extreme materials blade is ideal for the fastest cutting in screw-embedded wood, nail-embedded wood, plaster, cement board, drywall, PVC and more. The new Universal Fit OPEN-LOK Anchor is reinforced for added strength and control and allows for quick blade changes across 100 plus multi-tools. Not compatible with Starlock tools. Milwaukee oscillating multi-tool blades are designed and made in the USA with global materials.