Box of 15 EGO HAWKFLOW disposable cartridge tubes in blue. The EGO HAWKFLOW tubes are a very high end, premium tube designed to enable you to use Cheyenne Hawk cartridges with standard use machines. They are designed to work with high-end premium rotary machines that are powerful enough to push cartridge systems. The HAWKFLOW shape is made from a very soft silicone like material and is ergonomically designed to sit in the grip of your hand very comfortably. The inner tube and back stem are made from a very high quality and very strong ABS plastic material. Due to the simplicity in the way the Cheyenne Hawk cartridge system works, only one tube is needed per tattoo, as cartridges simply click in and out when you are changing sizes. Each tube comes complete with its own needle plunger bar in sterile disposable blister packaging, so everything is completely one use only.