This Gerber Armbar Cork has an onyx finish.
Gerber offers the Armbar series, a line of compact multi-tools that mix maximum utility and minimal weight and footprint. Some of the notable features of this Gerber multi-tool are a full 2.5" fine edge blade, and a corkscrew.
It's a 7-in-1 lol. The "8th" is the leverage arm for the corkscrew. Other than that little misnomer it's a great little tool. The hammer is a nice added touch and will hold me over until I get a Leatherman Signal