CobraTec Viper Hidden Release Automatic Knife – Black D2 Steel EDC Folding Knife CTVIPERHRBLKViper Hidden Release Automatic Knife Black D2 Steel EDC Folding Knife The Viper Hidden Release Automatic Knife in Black combines sleek styling, innovative engineering, and dependable performance in a compact everyday carry package. Unlike traditional automatic folders, the Viper features a unique hidden bolster release system that keeps the deployment mechanism discreetly concealed. With a simple slide of the bolster from front to back, the blade