Diablo's 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 blades. Tool-free, quick-change interface fits Fein and other Starlock tools also compatible with most non-Starlock multi-tools.• Curve contact edge creates a pilot for precise, clean plunge cuts with less vibration• Black I.C.E. coated teeth for heat resistance, long life and superior chip evacuation• Maximum performance in cordless and corded Fein and other Starlock tools• •