Wormhole Tattoo Cartridge Needles 50pcs Assorted Round Liner 3RL–11RL, Sterile Anti-Backflow

Wormhole Tattoo Cartridge Needles 50pcs Assorted are a ready-to-use set of sterile round liner cartridges (3RL–11RL) designed for precise outlining and steady ink flow.

This pack delivers fifty individually sealed cartridge needles—ten each of 3RL, 5RL, 7RL, 9RL, and 11RL—built for compatibility with most cartridge-style tattoo machines. Each cartridge combines stainless-steel needles with PVC/medical-grade plastic housing and an anti-backflow membrane to reduce ink migration into the machine. The light-grey tubing improves needle visibility while the rubber-loaded design maintains consistent performance across sessions.

Which needle sizes are included and when would I use each?

The assortment contains 3RL, 5RL, 7RL, 9RL, and 11RL round liners, giving you options from fine detail to bolder outlines. Smaller RL sizes (3RL–5RL) suit crisp detail and tight lines; mid-range (7RL–9RL) balances detail with fill speed; 11RL helps with thicker outlines and more visible strokes.

• 3RL — fine lines, small lettering, detail work
• 5RL — thin outlines, delicate shading edges
• 7RL — standard outlines, medium-weight strokes
• 9RL — bold lines, quicker coverage
• 11RL — heavy outlines, graphic or bold designs

How do these cartridges prevent ink backflow and machine contamination?

Each cartridge features a plastic membrane and rubber-loaded design that limits ink from traveling back into the grip or machine. That anti-backflow feature reduces the chance of contamination and simplifies cleanup, while the sealed packaging keeps each unit sterile until use.

• Plastic membrane blocks ink from flowing backward
• Rubber-loaded cartridges help maintain a consistent seal
• Individually sealed pouches ensure sterility before opening

Are these cartridges compatible with my tattoo machine?

Wormhole cartridges use a standard 12mm configuration and are built to fit most modern cartridge-style rotary and coil machines. The light-grey tubing improves visibility of needle movement, which helps you confirm fit and alignment quickly.

• Standard 12mm size fits the majority of cartridge grips
• Universal hub design for common cartridge machines
• Visible tubing aids quick visual checks during setup

What materials and safety features should I expect from this pack?

The needles are stainless steel and the cartridge housing is durable PVC/medical-grade plastic. Each cartridge is individually sealed to maintain sterility, and the needle edges are shaped to catch and deliver ink consistently during lining work.

• Stainless-steel needles resist corrosion and hold sharpness
• Medical-grade plastic housing for durability and safety
• Individually packed cartridges reduce cross-contamination risk

Who is this for: Tattoo artists and apprentices who need a reliable assortment of round liner cartridges for outlining and detailed work will find this 50-piece set useful. It suits people who prefer ready-to-use, individually sealed cartridges for hygienic convenience, and those using cartridge-style tattoo machines that accept 12mm standard cartridges.