Wormhole Tattoo 7RL Disposable Cartridge Needles 20-Pack — 7-needle Round Liner, Anti-Backflow Sealed

Wormhole Tattoo 20-piece 7RL disposable cartridge needles are sealed, single-use round liner cartridges designed for precise lining and safe, mess-reduced tattooing.

These 7RL (7 round liner) cartridges come in a convenient pack of 20, each sealed for hygienic single use. Constructed with stainless steel needles housed in light-grey PVC tubes, they feature an anti-backflow membrane and rubber band seal to help prevent ink reflux. The cartridges are built to fit most cartridge-style rotary and coil tattoo machines, offering visible needle action and engineered edges to pick up and lay down ink consistently.

How do these cartridges reduce ink backflow?

The cartridges include an integrated rubber band and a one-way plastic membrane that limits fluid movement into the machine. That combination helps keep ink inside the reservoir and away from grips and tubes, improving cleanliness during sessions. While not a replacement for standard hygiene practices, the barrier adds an extra layer of protection.

• Rubber band seal around the cartridge base
• Plastic anti-backflow membrane inside the cartridge
• Individually sealed packaging for sterile transport

What makes the 7RL needle configuration suitable for lining?

Seven needles grouped in a round formation create a compact, strong line ideal for outlining and detailed linework. The cluster provides consistent ink flow and a stable needle surface, helping artists achieve uniform strokes. It's a versatile choice for both bold outlines and refined detail depending on hand speed and pressure.

• 7-needle round liner for focused line density
• Needle edges shaped to collect and release ink evenly
• Works well for both bold and delicate outlines

Are these cartridges compatible with my tattoo machine?

Wormhole Tattoo cartridge needles are made to fit the majority of cartridge-style tattoo machines on the market. The light-grey PVC housing improves visual tracking of needle movement, and the universal connection dimensions match most cartridge grips and machines. Always confirm compatibility with your specific machine model before use.

• Universal cartridge design fits most rotary and coil guns
• Standard connection for cartridge grips
• High visibility tube color for easier needle monitoring

How is safety handled with these disposable cartridges?

Each needle cartridge is individually sealed and intended for single use, reducing cross-contamination risk when proper disposal and aseptic technique are followed. The stainless steel needles and PVC housing are manufactured for durability during normal tattooing sessions. These cartridges complement—but do not replace—standard sterilization protocols and professional hygiene practices.

• Individually packed and sealed cartridges
• Disposable single-use design to limit cross-contamination
• Stainless steel needles with sturdy PVC casing

Who is this for? Tattoo artists and permanent makeup technicians who need a cost-effective set of 7RL round liner cartridges for clear visibility, consistent ink delivery, and hygienic single-use convenience will find this Wormhole Tattoo pack practical. The 20-piece quantity suits busy professionals stocking supplies, apprentices practicing lining technique, and studios that prefer disposable cartridges to streamline setup and cleanup. Remember to use with appropriate machine compatibility checks and follow all local health and safety regulations when performing tattoo work.