Diablo, 3 pack of 1-1/4" universal fit bi-metal oscillating blades for metal. Diablo's universal fit bi-metal oscillating blades feature application specific designs that deliver maximum durability and longer life in metal. These high-performance blades feature an ultra-hardened cutting edge to deliver up to 5 times longer life than standard blades. An optimized tooth design reduces vibration for fast and clean cuts. Black I.C.E. (industrial cooling element) keeps the teeth cool and build up free for fast, clean cuts. The blade's universal fit, adapter-free design easily attaches most tools with the exception of Starlock tools.