?Package? Wormhole Tattoo Cartridge Needles are individually packed, and for disposable use only. ?Material: The tattoo cartridge needles are made of PVC and high-quality stainless steel, healthy and durable enough to work. ?Easy to identify: Grey tips and different color tail cover help you to recognize the type and make you enjoy better needle visibility and visual effect. The tattoo cartridge needles' semi-transparent tips make it easier to observe the needle striking. ?Advantages? High elasticity rubber plug connection, your tattoo work can be more smooth, preventing tattoo ink flow back. The tattoo needle edges are specially designed to catch more ink and make the tattoo ink flow well, prevent ink leakage or pigment leakage, and protect the tube, and tattoo pen. ?More Information: If you want to buy other models of tattoo cartridge needles or encounter problems in use, please search for the model you need or contact us directly.