★ Butterfly Knife | Ultraviolet

The Butterfly Knife | Ultraviolet is a Covert knife. It comes in five wears, Factory New to Battle-Scarred, with floats from 0.06 to 0.80. It also comes in a StatTrak™ version, but not a Souvenir one. It drops from two cases as a rare special item: Spectrum Case and Spectrum 2 Case.

This is a custom-designed balisong, commonly known as a butterfly knife. The defining characteristic of this weapon is the fan-like opening of a freely pivoting blade, allowing rapid deployment or concealment. As a result, butterfly knives are outlawed in many countries. It has individual parts spray-painted solid colors in a black and purple color scheme.