Kershaw Airlock 3 inch Folding Knife - Black - The Airlock is part of Kershaw's Starter series, designed to provide more style and more advanced features-for less money. For style, the Airlock has a slim, speedy look with a distinctive cutout in the handle that mirrors the handle shape. This "airlock" lets you see through to the stainless steel liners. A Decorative pivot works with the handle machining for an integrated look. The reversible pocketclip looks like a pen clip and helps the Airlock almost disappear in your pocket. Eye-catching looks with extra-thin "pen style" pocketclip for discreet pocket carry Opens quickly and easily with SpeedSafe assisted opening and built-in flipper 4Cr13 blade steel offers good corrosion resistance, high strength; bead-blasted finish provides a subtle, matte look Steel handle has patterned machining for secure grip