Box of 20 Optima PMU Cartridge Tattoo Needles by Kwadron Kwadron tattoo needles are known for being precisely made with high-quality materials for optimal performance. Kwadron Optima PMU cartridge tattoo needles are designed for precisely accurate permanent makeup tattooing. Kwadron Optima PMU cartridges also maintain the great qualities of the original Kwadron cartridges. Tattoo optimally with Kwadron’s unique stabilizing mechanism and a full membrane system that protects from ink back flow. Kwadron cartridges are also made of medical grade plastic housing, which helps reduce friction between the needle grouping and the tip. The surgical steel needles are razor-sharp and designed with utmost precision for every configuration. Kwadron Optima PMU cartridges can be used with most popular rotary tattoo machines, including FK Irons and Cheyenne models. This listing is for one box of 20 Kwadron Optima PMU cartridge tattoo needles. Kwadron Needle Taper Reference: Kwadron Taper Sizes Length Long Taper 7mm Medium Taper 5mm Short Taper 3mm Specifications: Medical grade plastic cartridges Surgical stainless steel needles Precise needle configurations Optimal ink flow Engineered with unique needle stabilizing system Full membrane protects against ink back flow Needle Diameter: 0.35mm Long Taper (LT) = 6mm Medium Taper (MT) = 3.5mm E.O. (ethylene oxide) gas sterilized Designed for permanent makeup tattooing Compatible with most rotary tattoo machines Price per one box of 20 Resources: Kwadron Sterilization Certificates