The N.K.3 is a small knife that expands the Extrema Ratio family of neck knives. It differs from the N.K.1 and N.K.2 models due to its larger blade size, which measures up to 70mm and is equipped with blood-scalding milling. The handle's ergonomics are designed to prevent accidental cuts during extraction from the sheath. A notch is made on the back for positioning the thumb or index finger depending on use. The knife's structure allows for very effective cutting as well as small precision work.
The Kydex sheath is quick-release and comes with a paracord for use as a neck knife. It can also be attached to the MOLLE system.