The Flat Shader cartridges by KWADRON®< feature a precision-engineered membrane that safeguards against ink backflow and contamination. With a #12 (0.35mm diameter) needle size, these cartridges cater to professionals demanding optimal performance for shading and color packing. The Long Taper design of the Flat Shader needles offers artists exceptional ink flow and control, facilitating both detailed work and expansive color fills with unparalleled ease. The Long Taper needles, available in Flat Shader configuration provide artists with the versatility to execute precise and smooth shading. The Smooth Needle Polish enhances the cartridges' performance, ensuring a consistent glide on the skin that promotes even ink distribution and reduces trauma.