A-minusone Tattoo Cartridge Needles 50-Pack Mixed Sizes — 10 Configurations, EO-Sterilized Anti-Backflow

A-minusone 50-pack mixed tattoo cartridge needles delivers ten commonly used needle configurations in a single, sterilized, disposable kit for professional and hobbyist artists.

This mixed-size set collects five pieces each of ten popular cartridge types so you can switch between liners, shaders, magnums and round shaders without buying separate packs. Each cartridge is EO gas sterilized, double-sealed for single-use safety, and constructed from 316L surgical stainless steel with medical-grade plastic housings. The transparent tube on each cartridge helps you watch ink flow while a built-in anti-backflow membrane and stabilizer reduce contamination risk and needle wobble during work.

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

The pack contains five cartridges each of 1005RL, 1007RL, 1009RL, 1011RL, 1005RS, 1009RS, 1015M1, 1021M1, 1015RM and 1021RM. This range gives you fine liners for detail, round shaders for packing color, magnums for smooth gradients and round magnum configurations for dense shading. Having multiple sizes lets you adapt to line weight, fill and texture without changing brand or cartridge format.

• 5 × 1005RL, 1007RL, 1009RL, 1011RL — fine to medium round liners for crisp lines and hairwork.
• 5 × 1005RS, 1009RS — round shaders for soft shading and small fills.
• 5 × 1015M1, 1021M1 — magnum flat stacks for smooth color packing and larger fills.
• 5 × 1015RM, 1021RM — round magnums for blended shading and soft transitions.

How do these cartridges keep ink and the machine clean?

Each cartridge uses a double-seal packaging and an internal membrane designed to prevent backflow of ink or biological matter into your machine. The clear plastic tube lets you monitor ink movement to avoid overflows. Using single-use, pre-sterilized cartridges also reduces handling compared to multi-use needles.

• EO gas sterilization ensures cartridges arrive sterile and ready for use.
• Double-sealed individual packaging maintains sterility until opened.
• Anti-backflow membrane stops ink or fluid from contaminating the machine.
• Transparent cartridge tips allow visual ink flow checks while tattooing.

Will these fit my rotary tattoo pen and how stable are they?

These cartridges use the universal cartridge interface that fits most rotary-style tattoo pens and grips. A built-in stabilizer minimizes tip wobble, keeping the needle aligned for consistent lines and shading. Compatibility with common machines makes the pack convenient for artists who swap between setups.

• Universal cartridge connection for broad rotary pen compatibility.
• Needle stabilizer reduces lateral movement for steadier strokes.
• 316L surgical stainless steel needles for corrosion resistance and structural integrity.
• Medical-grade plastic housing for a secure fit and clear visibility.

Who is this for? This 50-piece mixed pack is aimed at tattoo artists and advanced enthusiasts who want a versatile selection of sterile, disposable cartridges on-hand. It suits busy studios that require a range of liners and shaders for portraits, lettering and color work, as well as freelance artists who travel between clients. If you prefer pre-sterilized, single-use cartridges with anti-backflow protection and a mix of needle geometries, this kit offers an economical, ready-to-use solution.