The Responder X9 is a meticulously crafted knife that perfectly captures the essence of Mikkel Willumsen's custom designs. Its blade, made from the unique and aggressive Sandvik 12C27 steel, offers exceptional cutting ability, resistance to corrosion, and long-lasting sharpness. With Mikkel's extended thumb hole, you can easily open the knife with just one hand, and the deep pocket clip ensures that it stays concealed and secure until you need it. Mikkel Willumsen is renowned worldwide for his innovative and rugged Urban Tactical designs. Working from a repurposed factory in Copenhagen, Denmark, he has been creating custom knives of the highest quality for over a decade, specializing in both folding and fixed blades. By collaborating with Lansky, Mikkel brings his expertise and artistic vision to deliver a knife that combines modern functionality with Lansky Sharpeners' commitment to excellence.