The Extrema Ratio Aero in black and lime is a compact linerlock folder with a tactical-inspired design. The 2.75" tanto blade is made from MIL-C-13924 nitrogen steel with a black burnished finish -- this specification denotes a black oxide corrosion-resistant coating process commonly used on military-grade steel, and the nitrogen-alloyed steel adds strength and corrosion resistance. The black anodized aluminum handle features a lime green backspacer and accents for quick visual identification, in a genuinely pocketable 4.13" closed package. A thumb pull makes one-handed opening straightforward, and a lanyard hole adds retention.

Closed length 4.13" (10.49cm). Blade length 2.75" (6.99cm). Blade steel MIL-C-13924 nitrogen steel, black burnished finish. Blade shape tanto. Handle black anodized aluminum with lime green backspacer and accents. Liner lock. Thumb pull. Lanyard hole. Boxed.