20piece cartridge needles compatible with all rotary and coiled penstyle tattoo machines Key benefits Broad compatibility: Designed to fit all rotary and coiled penstyle tattoo machines for quick setup and consistent performance. Durable material: Needles are made from 316 medical grade stainless steel for strength and corrosion resistance during use. Clear labeling and packaging: Each cartridge is individually packaged and labeled with size and expiry date for easy inventory and workflow management. Improved ink delivery: Tip indentation enhances ink flow and saturation for more consistent pigment deposition. Reduced spitback: Builtin membrane mechanism minimizes ink spitback to help keep the work area cleaner and reduce interruptions. Reliable performance: Smooth needle action and consistent flow support precise lines, even shading, and uniform fills. Features at a glance Pack quantity: 20 cartridges Compatibility: All rotary and coiled penstyle tattoo machines Material: 316 medical grade stainless steel needles Packaging: Individual packs labeled with size and expiry date Design: Indented tip for enhanced ink flow, membrane mechanism to limit spitback Practical use scenarios Fine line and detail work: Use the cartridges for precise outlining and intricate linework where consistent flow and needle stability matter. Shading and color packing: Indentation at the tip helps with pigment saturation during shading or filling larger areas. Mobile or studio work: Individually packaged cartridges simplify setup and changeover for artists working in busy studio sessions or onlocation appointments. Why choose these cartridges Ease of use and compatibility reduce setup time and compatibility checks. Design features focus on consistent ink delivery and a cleaner working process. Individually packaged and labeled cartridges help maintain organized supplies and clear tracking of sizes and expiry dates. Specifications Quantity: 20 pieces Needle material: 316 medical grade stainless steel Compatibility: All rotary and coiled penstyle tattoo machines Packaging: Individual packaging with size and expiry date labeling