The Round Liner cartridges by KWADRON® incorporate a membrane system that prevents ink backflow, maintaining the purity of color and ensuring a safer tattooing process. The Round Liner cartridges are offered in a 0.35mm #12 needle diameter, accommodating a wide array of tattooing techniques, from precision line work to detailed shading, available in liners, textured liners, and medium taper liners configurations. Artists can choose between smooth polish for traditional needle glide and textured finishes for better ink retention, providing flexibility for different artistic preferences and techniques. The availability of both longer and medium tapers allows for customization in line width and depth, catering to a variety of artistic styles.