POSEIDON Tattoo Cartridge Needles 50pcs Mixed RS Sizes (1203–1211) — Sterile Disposable Membrane, Stainless Steel

POSEIDON 50PCS tattoo cartridge needles are sterile, disposable safety cartridges in mixed RS sizes designed for reliable ink flow and broad compatibility with standard cartridge grips and tattoo pens.

These cartridges bundle five commonly used round shader (RS) diameters—1203RS, 1205RS, 1207RS, 1209RS, 1211RS—so artists have immediate access to a range of line and shading options. Each needle is manufactured from stainless steel and fitted into a single-use cartridge with a disposable membrane to help protect ink channels from backflow. Cartridges arrive individually blister-sealed and EO-gas sterilized for hygienic storage and traceable opening.

How do these cartridges keep ink flow consistent during a session?

The POSEIDON cartridges pair corrosion-resistant stainless steel needles with a precisely engineered tip material to stabilize needle movement and promote smooth ink delivery. The internal channel and membrane design reduce the risk of splatter and clogging, helping maintain predictable saturation and line quality.

• Stainless steel needles for smooth coloring and consistent penetration.
• Engineered tip material reduces needle wobble and improves control.
• Disposable membrane helps prevent ink backflow into the machine.
• Cartridge geometry supports steady ink feed for both lining and shading.

Are these cartridges safe and ready to use straight from the pack?

Yes — each cartridge is individually blister-packed and sterilized using EO gas before shipping. The single-use design and sealed packaging mean cartridges are ready to attach to a compatible pen or grip immediately upon opening, minimizing prep time and contamination risks.

• Individually blister-sealed for hygienic storage and transport.
• EO gas sterilization applied to every cartridge.
• Single-use, disposable design eliminates the need for post-use sterilization.

Which needle sizes are included and what applications suit each?

The pack contains 50 cartridges across five RS sizes commonly used by tattoo artists: 1203RS through 1211RS. Smaller counts like 1203RS and 1205RS are ideal for fine lines and detail work, while 1209RS and 1211RS are better for broader shading and packing color.

• 1203RS — fine lines and intricate detailing.
• 1205RS — versatile lining and small shading tasks.
• 1207RS — medium lines and softer shading transitions.
• 1209RS/1211RS — efficient color packing and larger shading areas.

Will these cartridges fit my existing tattoo pen and grips?

POSEIDON cartridges are designed to be compatible with standard cartridge-style grips and most modern tattoo pens that accept cartridge fittings. Their one-time joint design and universal taper make them a practical choice for artists using a variety of equipment.

• Universal cartridge shape for compatibility with standard grips and pens.
• Simple plug-and-play installation—push-fit into compatible pens.
• Disposable membrane preserves machine internals from contamination.

Who this is for: Professional and freelance tattoo artists, apprentices learning needle selection, and studios that prioritize sterile, easy-to-change cartridges will find this 50-piece mixed set useful. It’s tailored for creators who need a practical mix of RS sizes for lining, shading, and color packing without managing multiple single-size orders. The pack’s sterile, disposable format also suits busy environments where speed, hygiene, and consistent performance are essential.