HAWINK 7RL Tattoo Needle Cartridges, 50-Pack — 7 Round Liner X-Taper, EO-Sterilized

These are HAWINK 7RL disposable tattoo needle cartridges: 7 round liner X-taper, individually EO sterilized, 50 cartridges per box with anti-leak membrane for professional tattooing.

Designed for artists who want consistent liners and a clean setup, the HAWINK 7RL cartridge combines medical-grade materials with a clear housing and integrated membrane. Each cartridge is pre-sterilized, compatible with most rotary and coil tattoo machines, and built to offer predictable needle performance and easy visual monitoring while working.

How do these cartridges keep ink from leaking into my machine?

Each HAWINK cartridge includes a fitted silicone membrane that blocks ink backflow into the grip and machine. The membrane reduces maintenance needs and protects internal components during long sessions.

• Built-in membrane prevents ink suction into the tube and machine.
• Semi-transparent body lets you watch needle movement and ink flow.
• High-quality silicone parts maintain elasticity and seal integrity.

What materials and sterilization standards are used?

Needle shafts are made from 316 medical-grade stainless steel for the tips, while the cartridge housing uses durable medical-grade plastics. Every cartridge is EO gas sterilized and individually packaged for single-use safety.

• 316 stainless steel needle tips for corrosion resistance and strength.
• Medical-grade plastic cartridge bodies for biocompatibility.
• 100% EO gas sterilized and individually sealed for hygiene.

Will these fit my machine and how do they perform for lining work?

HAWINK cartridges are engineered to be compatible with most rotary and coil tattoo machines as well as HAWINK grips. The 7 round liner (7RL) X-taper configuration gives controlled ink pickup and precise groupings ideal for crisp outlines and detailed linework.

• Standard 7RL grouping suited for clean, consistent lines and outlining.
• X-taper needles concentrate the point for sharper penetration and control.
• Works with universal cartridge-compatible grips and machines.

How do these cartridges make setup and workflow easier?

The semi-transparent, bevel-tipped cartridge design makes needle action and ink level visible, so you can adjust technique without interrupting the flow. The individual packaging and ready-to-use format speed up station changes and maintain a sanitary workflow.

• Semi-transparent housing allows visual monitoring of needle strike.
• Individually sealed cartridges simplify sterile setup and quick swaps.
• Box of 50 reduces restocking frequency for busy artists.

Who is this for: Professional tattoo artists and apprentices who need reliable, sterile disposable cartridges for precise lining. These 7RL HAWINK cartridges suit busy studios looking for consistent needle performance, reduced machine contamination, and an efficient, hygienic refill system.