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.