MAST TATTOO Mast Pro Tattoo Cartridges 3RL Bugpin #04 — 20-Pack Disposable Sterile Needles for Precise Lining

Mast Pro Tattoo Cartridges 0403RL are sterile, disposable 3 round liner bugpin needles in size #04, sold as a pack of 20 for precise, consistent lining and detail work.

These MAST TATTOO Mast Pro SMP cartridges combine a low-profile housing, protective membrane and surgical-grade stainless steel needles to deliver smooth ink flow and clearer visibility for fine lines, micro details and cosmetic applications. Each cartridge is EO gas sterilized and individually packaged, designed to fit most cartridge-compatible rotary pens and permanent makeup machines.

How do these cartridges improve line precision?

The 3 round liner (3RL) configuration with a bugpin #04 grouping provides a tighter, denser point than standard liners, producing crisper, more defined strokes. The low-profile tip places the needle closer to the skin for better control and reduced drag.

• Bugpin grouping gives compact ink deposit for sharp lines
• Low-profile housing improves hand-to-skin angle sensitivity
• Clear tip increases visibility of needle and pigment flow
• Stable needle bar reduces wobble for consistent results

Are these cartridges safe and ready to use?

Yes — each Mast Pro SMP cartridge is made with surgical stainless steel needles and is 100% EO gas sterilized before packaging. A protective membrane prevents fluid backflow, helping keep the machine and workspace cleaner while preserving sterility until use.

• Individually sealed packaging for single-use safety
• Protective membrane blocks ink and fluid contamination
• Surgical-grade materials with smooth edges to minimize trauma
• Clear housings allow visual inspection before use

Will these cartridges fit my tattoo or PMU pen?

Mast Pro cartridges are engineered to be compatible with most cartridge-style machines that accept universal cartridge interfaces. They are especially suited for Mast Tattoo pen machines but will pair with other brands that use the same plug-in cartridge mount.

• Universal cartridge interface for broad compatibility
• Works with many rotary and PMU pen models
• Quick-swap design for efficient session flow
• Low-profile fit maintains needle reach and control

What benefits can artists expect during regular use?

Artists will notice steadier ink distribution, improved precision for detailed work, and reduced interruptions due to the cartridges' stable needle assembly and protective membrane. The clear tip and refined interior shaping help maintain consistent pigment flow throughout the session.

• Even ink delivery reduces the need for repeated passes
• Sharper, more predictable lines for fine work and shading
• Reduced machine contamination saves cleaning time
• 20 cartridges per pack for multiple sessions or clients

Who is this for? These Mast Pro 0403RL bugpin #04 cartridges suit professional tattoo artists, permanent makeup technicians and advanced apprentices who require tight, controlled liner work — from crisp outlines to micro-detailing and cosmetic procedures. They’re also a practical choice for studios wanting sterile, disposable cartridges that fit most cartridge-capable machines and support efficient session workflow.