Diablo's Starlock bi-metal oscillating blades feature application specific designs that deliver maximum durability and longer life in clean 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.• Maximum performance in cordless and corded Fein and other Starlock tools• Black I.C.E. coated teeth for heat resistance, long life and superior chip evacuation• Made with high quality material• •