Diablo's AMPED Steel Demon Starlock carbide oscillating teeth blades for metal feature application-specific designs that deliver extreme durability and superior cutting life across multiple metals. High-performance carbide teeth deliver an unmatched up to 50X longer cutting life versus standard bi-metal blades in metal cutting applications. An optimized blade and tooth design, along with Black I.C.E (Industrial Cooling Element) keeps the teeth cool and buildup free for fast, clean cuts. Tool free quick-change interface fits Fein and other Starlock tools; also compatible with non-Starlock multi-tools.