A-minusone Tattoo Cartridge Needles 50 Assorted Mix — Sterilized, Universal Fit, 10 Configs

A-minusone 50 assorted tattoo cartridge needles provide a ready-to-use, sterilized mix of liners, shaders and mags for versatile tattooing across styles and machines.

This kit bundles ten popular cartridge types—five pieces each—so artists have a balanced supply of round liners, round shaders, magnums and mixed configurations in one sealed pack. Cartridges are EO gas sterilized, individually double-sealed and built with 316L surgical stainless steel needles and medical-grade plastic housings. The transparent tubes help you monitor ink flow, while an anti-backflow design and internal stabilizer reduce contamination and tip wobble during work.

Which needle sizes and configurations are included in this set?

The pack contains 50 cartridges comprised of ten configurations with five pieces each: 5RL, 7RL, 9RL, 11RL, 5RS, 9RS, 15M1, 21M1, 15RM, and 21RM. This spread covers fine liners, standard liners, round shaders, tight magnums and curved magnums for coverage and blending. Having multiples of each size gives artists flexibility to switch quickly without changing machines.

• 5RL, 7RL, 9RL, 11RL: fine-to-medium round liners for precise linework
• 5RS, 9RS: round shaders for smaller packed color or soft shading
• 15M1, 21M1: single-stack magnums for fast color packing
• 15RM, 21RM: curved/round magnums for smooth gradients and blending
• 5 pcs per size: convenience stock for sessions and walk-ins

How do these cartridges protect against contamination and backflow?

Each cartridge features a membrane and a sealed housing that work together to guard the machine from ink and bodily fluids. Cartridges are sterilized with ethylene oxide (E.O.) gas, individually packaged, and double-sealed for single-use safety. The internal stabilizer reduces needle wobble, keeping lines cleaner and minimizing unintended trauma to the skin.

• E.O. gas sterilization: single-use sterile assurance
• Double sealed packaging: preserved sterility until opening
• Anti-backflow membrane: prevents ink and fluid migration into the pen
• Internal stabilizer: steadier needle performance during work

Are these cartridges compatible with my rotary tattoo pen?

The A-minusone cartridges are engineered to fit most universal cartridge-style rotary machines and grips used by contemporary artists. They use the standard plug-and-play connection common across major rotary brands, so you can swap cartridges quickly between sessions. If your machine accepts universal cartridges, these will typically seat and lock without adapters.

• Universal-fit design: compatible with most rotary pens
• Plug-and-play installation: quick change between needles
• Transparent tube: visual ink monitoring during sessions
• 316L stainless steel needles: corrosion-resistant and durable

Who is this for? Tattoo professionals and apprentices who need an assorted, sterilized supply to cover a wide range of tasks—from crisp lining to smooth packing and soft shading. The mixed-size format is ideal for busy shops, guest artists, and artists building kit variety without buying single-size boxes. If you prefer pre-sterilized, disposable cartridges that reduce setup time and cross-contamination risk while offering reliable needle stability, this A-minusone 50-piece mixed pack is designed to serve those needs.