CNC Tattoo Needle Cartridges 20pc Kit — 7RM/9RM/11RM/13RM Round Magnum, Sterile EO-Gas, Stabilizer

This kit supplies tattoo artists with a set of pre-sterilized cartridge needles in commonly used round magnum sizes. Each cartridge is individually EO-gas sterilized and engineered for consistent performance, featuring a stabilizer to minimize wobble, a snug red shell for quick installation, and a membrane designed to limit backflow. The set is compatible with most standard cartridge grips and rotary pen machines, making it suitable for studio use or mobile artists who need a dependable variety pack.

Which needle sizes are included and what are they best for?

The CNC kit contains twenty cartridges: five each of 7RM, 9RM, 11RM and 13RM. These round magnum configurations are favored for shading, color packing, and creating smooth gradients without excessive trauma.

• 7RM — tighter grouping for smaller shading zones and detail blending
• 9RM — mid-range for controlled shading and soft fills
• 11RM — wider magnum for faster color packing and larger mid-tones
• 13RM — larger coverage for broad fills and gradients

How does the cartridge design support precise work?

Each CNC cartridge is built with a sharp, consistent tip and a strong membrane to control ink flow and reduce rebound. A stabilizer inside the cartridge helps prevent lateral movement, so line consistency and smooth shading are easier to achieve.

• Sharp tip for clean penetration and predictable strokes
• Strong membrane reduces backflow and keeps ink where it belongs
• Internal stabilizer minimizes wobble for steadier needle action
• Red shell provides a clear, tactile fit and quick visual identification

Are these cartridges safe and compatible with my machine?

Yes—CNC cartridges are EO gas sterilized and individually sealed to meet common studio hygiene expectations. They are designed to fit standard cartridge grips and most rotary pen tattoo machines, allowing quick twist-and-lock assembly for fast workflow between sessions.

• Individually EO-gas sterilized and sealed for single-use safety
• Standard cartridge interface fits most grips and rotary pens
• Easy twist installation and removal speeds up setup
• Packaged to preserve sterility until opened

What practical advantages do these cartridges offer during a tattoo session?

The CNC cartridges combine high ink capacity with precise ejection to maintain steady delivery through longer passes. That means fewer interruptions to refill or adjust, and a more consistent look when shading and color packing across larger areas.

• Large ink absorption and storage for extended fills
• Even penetration reduces tissue trauma and improves finish uniformity
• Precise ejection promotes predictable shading and smoother gradients
• Attractive, durable red shell for repeated identification during sessions

Who is this for: The CNC 20-piece 7RM–13RM round magnum cartridge kit is tailored for tattoo artists who need a reliable assortment of shading and packing needles. It suits studio professionals, apprentices gaining experience with magnum configurations, and traveling artists needing a compact, sterilized set that fits standard cartridge systems. If you require different sizes or an alternative packaging option, CNC's after-sales support is available to assist with model queries or replacements.