Diablo's Starlock carbide oscillating blades feature application specific designs that deliver extreme durability and superior cutting life in metal cutting. High-performance carbide teeth deliver an unmatched up to 50X longer cutting life versus standard bi-metal blades. An optimized blade and tooth design, along with 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.