Diablo’s Demo Demon Starlock bi-metal oscillating blades feature application specific designs that deliver maximum durability and longer life in nail-embedded wood applications. These high-performance blades feature an ultra-hardened cutting edge to deliver up to 5X longer life than standard bi-metal blades. Curve contact edge creates a pilot for precise, clean plunge cuts with less vibration. Black I.C.E. (Industrial Cooling Element) protects the cutting edge against wear, delivering extreme durability and fast, clean cuts. Tool-free quick-change interface fits Fein and other Starlock tool also compatible with most non-Starlock multi-tools.Ultra-hardened cutting edge for up to 5X longer life than standard bi-metal bladesCurve contact edge for precise, clean plunge cuts with less vibrationBlack I.C.E coating protects the cutting edge against wear delivering extreme durabilityMaximum performance in cordless and corded Fein and other Starlock toolsNot compatible with Craftsman, Dewalt, Dremel, Hart or Porter-Cable