Hawk Needles are a cartridge style need that allows quick changes between different styles and sizes easily. They have been designed to work with Cheyenne Hawk Spirit and Thunder machines as well as other grips that will accept cartridge style needles. They have been manufactured to the highest quality allowing clean punctures and extremely smooth lines. The needle cartridges have their own integrated membrane that keeps ink and blood away from the grip. In addition to this, the needles simply disappear back in to the safety cartridge when switched off, making it easy and safe to dispose of.