Cheyenne Safety Cartridges are German-Engineered, premium needle cartridges from one of the forerunners in removable needle modules. Aptly named for its sterilization and design, the Cheyenne Safety Cartridge features a shelf-life of up to 5 years and an internal membrane system that prevents ink back flow. Each Cheyenne Safety Cartridge is inspected after assembly to ensure quality and performance that artists can rely on.