The MILWAUKEE® NITRUS CARBIDE™ Extreme Metal Universal Fit OPEN-LOK™ Oscillating Multi-Tool Blades are the next generation of carbide teeth technology, providing the fastest cutting and longest life on the jobsite. The extreme metal NITRUS CARBIDE™ oscillating multi-tool blade delivers up to 2X more cuts than Carbide Teeth blades - capable of over 300+ cuts in deck screws. The extreme metal blade is ideal for cutting metal fasteners such as bolts, screws, nails, and threaded rod. The new Universal Fit OPEN-LOK™ Anchor is reinforced for added strength and control and allows for quick blade changes across most major tool models. Not compatible with Starlock tools. MILWAUKEE® oscillating multi-tool blades are designed and made in the USA with global materials. Available in 1, 3, or 5 packs.