Disposable single use cartridge needle, equipped with safety membrane to eliminate back flow and cross contamination risks. This cartridge is ideal for: advanced artists and could be used to create fine lines as well as dense shading. Excellent stability, less vibration. Our cartridges are made of medical grade stainless steel and E.O. gas sterilized. Additionally sterilization is certified by Gamma Ray, which complies with Government Sterilization Guidelines. Individually packed 5 pieces per box. Disposable, for single use only.