The magnum tattoo needles consisting of two rows are great for filling and shading. The soft edge magnum tattoo needles (or “curved magnums”) have a slightly rounded front to avoid the umbrella effect (the skin doesn't evade the needles in the middle and the design remains even). All Cheyenne Craft Cartridges contain a patented Safety Membrane, which prevents blood and tattoo ink from entering the tattoo grip and the associated cross-contamination.