POSEIDON Tattoo Cartridge Needles 50pcs Mixed RS Sizes (3–11) — Sterile, Disposable Membrane Safety, Universal Fit

POSEIDON 50PCS Tattoo Cartridge Needles are pre-sterilized, disposable cartridge needles in mixed RS sizes designed for reliable ink flow and safe, single-use operation with compatible tattoo pens.

These cartridges come as a 50-piece mixed set (1203RS, 1205RS, 1207RS, 1209RS, 1211RS) that suit a range of line and shading work. Each cartridge is EO gas sterilized, individually blister-packed, and designed with a disposable membrane to prevent backflow. The construction uses stainless steel needles and a specialized tip material aimed at stable needle performance and consistent ink delivery.

What needle sizes are included and how do they suit different techniques?

The set includes five round shader (RS) sizes — 3, 5, 7, 9, and 11 — so you have options for fine lines, mid-weight lines, and shading. Artists can switch quickly between sizes during a session without changing grips or machines, making this set flexible for multi-step tattoos.

• 1203RS — precise fine lines and small details
• 1205RS — thin lines and tight shading
• 1207RS — versatile mid-sized lines and texture work
• 1209RS — broader lines and soft shading
• 1211RS — larger shading and filling areas

How do these cartridges protect hygiene and prevent cross-contamination?

Each cartridge is sterilized with EO gas and sealed in its own blister pack to maintain sterility until use. The disposable membrane safety system reduces the risk of ink or fluid backflow into the machine, helping keep your equipment clean and lowering cross-contamination risk.

• EO gas sterilization for single-use safety
• Independent blister packs keep each cartridge sterile
• Disposable membrane blocks backflow to the grip/machine
• One-time joint design enforces single-use hygiene

Are these cartridges compatible with my tattoo pen and grips?

POSEIDON cartridges are built to fit standard cartridge grips and most cartridge-based machines on the market. The universal joint design means they snap into place securely, letting artists mount and change cartridges fast without adapters in most cases.

• Standard cartridge connection fits most grips and pens
• Quick-snap installation for efficient cartridge swaps
• Suitable for a wide variety of cartridge-compatible machines

What performance features do these needles offer during tattooing?

The needles are made from stainless steel for smooth pigment uptake and consistent penetration, while the tip uses a special material to stabilize needle movement. That combination promotes steady ink flow and predictable line quality across different session speeds and skin types.

• Stainless steel needles for clean ink flow and durability
• Specialized tip material for stable needle performance
• Designed to minimize wobble and improve control

Who is this for? This 50-piece POSEIDON mixed RS cartridge set is aimed at freelance and studio tattoo artists who need a compact assortment of sizes for versatile work — from detailed linework to broader shading. It also works well for apprentices building a starter toolkit and for experienced artists who prefer pre-sterilized, disposable cartridges to speed setup and maintain strict hygiene standards. POSEIDON’s refund/replacement policy adds a safety net for quality concerns, letting professionals focus on technique rather than inventory issues.