One of the main factors that led to the creation of KWADRON® cartridges was the desire to create a product that has the highest usability, and above all the highest quality unattainable for other brands. Using professional knowledge and experience, following trends and listening to tattooists, we have created a cartridge that perfectly matches the needs of customers. The highly advanced and automated technological process used in the production of KWADRON® cartridges guarantees that each of them is just as perfect. KWADRON® cartridges have a unique needle stabilization system that ensures durability and optimum performance. The cartridges case was made of medical plastic which allowed to reduce the friction between the needle and the casing to a minimum, and the needles remain sharp. The tattooists appreciated the quality of KWADRON® cartridges and demonstrated it in the best possible way – for years, creating their work with them! KWADRON® PMU OPTIMA CARTRIDGES are compatible with the most popular machines like EQUALISER PROTON, Cheyenne Hawk, Fk irons etc. LT – Long taper (7mm)