Complete guide: Kwadron Cartridge RL Tattoo Needles
Kwadron RL cartridges are Round Liner type needles designed for lines — from bold outlines to fine line — manufactured in Poland from stainless steel, with a safety membrane and medical-grade plastic housing that reduces friction between the needle and the housing. They are a single-use consumable, individually packaged and EO sterilized, with CE marking. They are aimed at both experienced artists looking for consistency from one cartridge to another, and those building their setup on a cartridge system.
How to use
- Wash your hands and put on disposable gloves before touching the cartridge; prepare the work area with protective barriers on the machine, clip cord, and surfaces.
- Check the integrity of the individual blister: if the packaging is unsealed, perforated, or damaged, do not use the cartridge.
- Choose the configuration suitable for the work: the RL range goes from 1RL to 18RL — small groupings (1–3RL) for fine lines and details, medium groupings (5–9RL) for standard outlines, large groupings for thick lines.
- Also consider the gauge and taper when choosing: #8 (0.25 mm), #10 (0.30 mm) or #12 (0.35 mm), with taper short, medium, long or extra long, depending on how fine and controlled you want the line to be.
- Insert the cartridge into the cartridge grip until it locks firmly, then adjust the needle depth according to your technique.
- Test on paper or on a glove the pigment flow and needle movement before first contact with the skin.
- Work normally; the cartridge membrane prevents fluid backflow towards the grip and machine, but protective barriers remain mandatory.
- At the end, remove the cartridge and dispose of it immediately in the sharps container — it is strictly single-use.
Tips from us
- Keep multiple configurations in stock (for example a small grouping for details and a medium one for outlines), so you don't interrupt the session when switching from fine line to solid lines.
- For very fine lines, combine a small grouping with a thin gauge and a long taper — the needle deposits pigment more slowly and controlled, with less trauma to the skin.
- For defined, traditional outlines, a shorter taper on a medium grouping gives full lines in a single pass.
- Store sealed cartridges in a dry place, away from moisture and sunlight, to protect the sterile packaging.
- Note down the configuration, gauge, and taper combinations that work best for each style — consistency between cartridges makes it easy to replicate the same result.
- Being a product sold individually, you can first test a few different configurations before stocking up on the one that suits you.
Warning: The cartridges are sterile (EO sterilization) only as long as the individual packaging is intact — never use a cartridge with a damaged or unsealed blister. They are strictly single-use: they cannot be resterilized or reused under any circumstances, not even on the same client in different sessions. After use, dispose of them in a dedicated sharps container, according to hygiene standards for tattoo studios. Always work with gloves and protective barriers on equipment.
Frequently asked questions
What does RL mean and what are these cartridges used for?▾
RL stands for 'Round Liner' — the needles are tightly grouped in a round shape, specifically for lines. It is the basic configuration for outlines, lettering, details, and fine line. For shading or filling, other types of groupings (shader, magnum) are used, so RLs are mainly used for the lining part of the work.
Do Kwadron cartridges fit my machine?▾
Kwadron cartridges have universal compatibility with standard cartridge systems: they require a pen-style machine or a cartridge grip with a standard actuation mechanism. They do not work on traditional coil machines configured for needle on bar without a cartridge system. If you already use other cartridges with standard fitting, most likely Kwadron RL will fit without issues.
How do I choose between gauge #8, #10, and #12?▾
Gauge is the needle diameter: #8 means 0.25 mm, #10 means 0.30 mm, and #12 means 0.35 mm. #12 is the versatile standard for regular lining, #10 is a frequent choice for fine line, and #8 for ultra-fine work. A thinner gauge gives a finer line and allows pigment to flow more slowly, so it requires a somewhat more controlled technique.
What role does taper (short, medium, long, extra long) play?▾
Taper is the length of the needle tip cone. A short taper penetrates more aggressively and deposits a lot of pigment quickly — suitable for bold outlines. Medium taper is the most versatile for everyday lining. Long and extra long taper enter the skin more gently and release pigment slowly, which is why they are preferred for fine line and delicate work. The gauge + taper combination exactly defines the needle behavior.
Can I sterilize and reuse a cartridge after a session?▾
No, absolutely not. Cartridges are single-use products: after use they come into contact with blood and fluids, and the construction with membrane and plastic housing does not allow resterilization in an autoclave. Reuse presents a real risk of infection and cross-contamination. The used cartridge is immediately disposed of in the sharps container, and for the next work you open a new, sealed one.
What RL configuration is suitable if I'm just starting?▾
To start, a medium grouping like 5RL on gauge #12 with medium taper is among the most forgiving and versatile options for practicing lines — 5RL #12 medium is indeed mentioned as the most popular universal choice in the range. 3RL is the natural next step for finer lines, but requires more control. The range goes from 1RL to 18RL, so you have room to gradually advance to more demanding configurations as your hand confidence grows.
Product description
Kwadron cartridge needles One of the main factors that led to the creation of Kwadron cartridges, was the desire to create a high-quality product that perfectly suits the needs of customers. The extremely advanced and automated technological process used in the production of Kwadron cartridges guarantees that each individual needle is perfect. They have a unique needle stabilization system that ensures durability and optimal performance. The casing for the cartridges is made of medical plastic, which allowed to minimize the friction between the needle and the casing, allowing them to remain sharp. Tattoo artists appreciate the quality of Kwadron cartridges and demonstrate it in the best possible way, using them every day. The needles are with membrane. The product is individually packaged and is for single use. Material: Stainless steel The price is per piece.
Kwadron RL cartridge tattoo needles are Round Liner cartridges from the premium Kwadron range, manufactured in Poland with the legendary precision that has made Kwadron one of the world's most awarded needle brands. Kwadron RL is the go-to choice for artists demanding perfect concentricity, split-free lines, and absolute consistency from the first to the last cartridge in the box. Each needle grouping is individually inspected under microscope to guarantee perfect tip convergence — critical for impeccable lines. The highest quality surgical steel, polished at nanometric level, ensures exceptional sharpness and extended durability. Gauge available in #8 (0.25mm), #10 (0.30mm), and #12 (0.35mm) — the most complete gauge offering in the industry. Variable taper: short (defined thick lines), medium (versatile), long (fine line), extra long (ultra fine line). Premium membrane with optimized flow. Universal compatibility. Available from 1RL through 18RL — the widest configuration spectrum on the market. Compared to Cheyenne Safety RL, Kwadron wins on variety and precision. Against Cheyenne Capillary RL, Kwadron loses on capillary flow but wins on customizability. EO sterilization, CE, made in EU (Poland). Box of 20 cartridges. The absolute gold standard for artists accepting no compromise on lining.
Frequently Asked Questions What makes Kwadron RL so special? Kwadron RL is special through three elements: manufacturing precision (each grouping microscopically inspected for perfect concentricity), variety (3 gauges, 4+ tapers, 18 configurations = over 200 unique variants), and consistency (near-zero variability between cartridges and between lots). No other brand offers this combination. Result: any artist, regardless of style, can find the exact Kwadron RL combination perfectly matching their technique. What gauges are available for Kwadron RL?#8 (0.25mm): thinnest, for ultra-delicate fine line and micropigmentation. #10 (0.30mm): intermediate, ideal for standard fine line and sensitive skin. #12 (0.35mm): industry standard, versatile for all types of lining. Gauge choice influences: line thickness, skin trauma, needle durability, and voltage requirements. #12 for 70% of lining, #10 for fine line, #8 for ultra-fine work and PMU. What taper options does Kwadron RL offer? Short taper: aggressive penetration, defined thick lines — ideal for traditional, bold outlines. Medium taper: most versatile, penetration/durability balance — for general daily lining. Long taper: gentle penetration, ideal for fine line — less trauma, thinner lines. Extra long taper: ultra-delicate, for single needle and micro-realism — ink enters slowly and controlled. Combining gauge + taper, you can achieve exactly the desired behavior. Kwadron RL vs Cheyenne Safety RL? Two titans. Kwadron RL wins: precision (microscopic inspection), variety (#8/#10/#12, 4 tapers, 18 configurations), slightly more accessible pricing. Cheyenne Safety RL wins: ink flow (superior Safety membrane), gamma sterilization, and feel on Cheyenne machines. Both are world's top 2 liner cartridges. Preference depends on priority: precision → Kwadron, flow → Cheyenne. Many top artists maintain both in their arsenal. Is Kwadron RL the best for fine line tattoo? Kwadron RL #10 long taper 3RL is considered by many artists the world's best cartridge for fine line tattoo. The combination: thin gauge (0.30mm) for ultra-fine lines, long taper for gentle penetration, and perfect Kwadron concentricity for zero splits. At 6-7V on machines with 2.5-3mm stroke, produces perfectly consistent hair-thin lines. The only comparable alternative: Cheyenne Capillary 3RL, which compensates with capillary flow. What Kwadron RL configurations are available? The widest range in the industry: 1RL, 3RL, 5RL, 7RL, 8RL, 9RL, 11RL, 14RL, 18RL. 8RL and 18RL are Kwadron-unique. Each configuration available in multiple gauge/taper combinations. 5RL #12 medium is the most popular universal. 3RL #10 long is the fine line benchmark. 14RL #12 short is the bold traditional choice. What voltage for Kwadron RL?#12 gauge: 7-8.5V. #10 gauge: 6.5-8V. #8 gauge: 6-7.5V. Short taper: add 0.3V. Long taper: reduce 0.3V. Premium Kwadron membrane works efficiently across a wide range. Sweet spot: #12 medium 5RL at 7.5-8V — the most common setup in the industry. How much does Kwadron RL cost in Romania? Kwadron RL: 90-140 RON / 20 pcs, varying by gauge, taper, and configuration. Below Cheyenne Safety RL (150-210 RON), above Big Wasp X RL (55-80 RON) and Hummingbird RL (45-70 RON). Exceptional quality/price ratio — world-top precision at sub-Cheyenne Safety pricing. Does Kwadron RL work on all machines? Yes, perfect universal compatibility. Works on absolutely any pen-style machine with standard grip. Kwadron RL is actually the cartridge many professionals use as a calibration reference when testing new machines — if it works well on Kwadron RL, the machine is good. Confirmed on: Cheyenne, FK Irons, Bishop, Dragonhawk, EZ, Pen, and others. Is Kwadron RL suitable for dotwork? Kwadron RL 1RL and 3RL are arguably the world's best options for professional dotwork. Perfect concentricity produces identical dots, lot after lot. 1RL #10 long taper at low voltage (5-6V) creates perfect micro-dots for mandala and geometric. 3RL #12 medium for more visible dots. Kwadron consistency is critical for dotwork where dot uniformity defines work quality. No compromise, every dot perfect.
