The Marfione Custom DOC Killswitch Automatic Knife Titanium DLC Satin Custom Killswitch DOC is a collaboration that harnesses the genius of Anthony Marfione and Mick Strider. This one features a black DLC colored titanium handle, backstrap, and pocket clip, marked "D.O.C. Killswitch, A. Marfione 04/2015". S/N # 24. The hand ground, Elmax steel blade features a DLC coating and hand rubbed satin finish. It is deployed using the ingenious "Killswitch" firing button with integrated safety. Action is smooth and strong.