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 rods. 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.