Diablo's Starlock carbide oscillating blades feature application specific designs that deliver extreme durability and superior cutting life in general purpose cuts: nail-embedded wood, clean wood, metal and plastics. High-performance carbide teeth deliver an unmatched up to 50X longer cutting life versus standard bi-metal blades. Curve contact edge creates a pilot for precise, clean plunge cuts with less vibration. An optimized blade design and Black I.C.E. (Industrial Cooling Element) keeps the teeth cool and build Up-free for fast, clean cuts. Tool-free quick-change interface fits Fein and other starlock tools, also compatible with non-starlock multi-tools.