Generation A T-Tech needle cartridges have a newly designed and patented protective barrier membrane and are equipped with a patented capillary-action tip that guarantees a smoother ink flow for longer periods of time. T-Tech curved magnums are great to colour pack large areas for tattooing, shading medium and large areas, as well as blending. Medical-Grade Plastic and Silicon Type 304 and 316 Stainless Steel Lead-Free EO Sterilized and individually packaged Easy-to-Read sterilization indicator on every cartridge Cartridge assembly in Cleanroom ISO 8 (Class 100,000) Air Purification