The Microtech Dirac Delta OTF Automatic Knife with partially serrated black-coated dagger blade brings serious heft and tactical edge to the lineup—larger scale for bigger tasks while keeping that lightning-fast Microtech snap. The 3.79-inch dagger blade, forged from elite M390 stainless steel and finished in a tough black coating, merges clean plain-edge slicing with partial serrations that tear through rope, webbing, or heavy cordage like it's nothing. It deploys and locks with explosive dual-action speed via the front thumb slide—smooth, instinctive, and built to perform under pressure.