Ultra-hardened cutting edge for up to 5x longer life than standard blades Curve Contact Edge for precise, clean plunge cuts with less vibration Black I.C.E. coated teeth for heat resistance, long life and superior chip evacuation Diablo’s universal fit bi-metal oscillating blades feature application specific designs th Diablo DOU200RBD - 2 in. Universal Fit Bi-Metal Oscillating Blade for Drywall