Kwadron Liners Cartridges are Round Liner (RL) tattoo cartridges built for artists who want clean, single-pass lines. The needles are grouped in a circular configuration, which delivers strong ink flow and precise control, from fine linework to bold outlines. A safety membrane prevents ink backflow into the machine, and the cartridges are EO gas sterilized and sold in boxes of 20.
What you get
- Box of 20 cartridges
- Diameters: 0.25 mm (#08), 0.30 mm (#10) and 0.35 mm (#12)
- RL LT (Long Taper): softer entry and more precision, ideal for fine lines and detail work, in 0.25, 0.30 and 0.35 mm
- RL MT (Medium Taper): more skin contact and stronger saturation for bold lining and traditional work, in 0.35 mm
- RL LT Turbo: long taper with textured needles for enhanced ink flow, in 0.35 mm
- PMU Optima: permanent makeup cartridges in 0.20 and 0.25 mm
- Needle counts from 1 to 18 depending on the configuration: 1, 3, 5, 7, 9, 10, 11, 13, 14, 15 and 18
Reach for a 1 or 3 RL for script and fine detail, 5 to 9 for standard outlines, and 11 to 18 when you need heavier lines or want to fill small areas quickly. The long taper gives a gentler entry for delicate work, while the medium taper pushes more pigment for saturated traditional lines. Round liners are usually paired with magnum or shader cartridges so you can run a consistent setup from outline to fill.
Available at BNG Tattoo Supply, official distributor of Kwadron in Canada. We ship anywhere in Canada: flat-rate $17.95, free on orders over $300. Free pickup at our Québec City store.
NEEDLE GUIDE
KWADRON GAUGE & TAPER EXPLAINED
A simple guide to help artists choose between 0.25mm, 0.30mm, 0.35mm, Medium Taper and Long Taper cartridges.
Fine / Controlled
Best for fine lines, small details, soft shading, delicate black & grey, and smoother controlled ink flow.
Balanced / Versatile
A strong all-around choice for lining, shading, smooth blends, color work, and everyday tattooing.
Bold / Strong Flow
Best for bold lines, traditional work, solid color packing, larger shading, and faster ink saturation.
Medium Taper
Better for bolder lines, stronger saturation, traditional lining, color packing, and solid work.
Long Taper
Better for detail work, smoother gradients, softer shading, controlled lining, and lower trauma.
How to read it
12 / 09 RL LT means: #12 gauge / 0.35mm 9 needles Round Liner Long Taper
The Industry Standard for Tattoo Cartridges.
Kwadron has become one of the most respected names in professional tattoo cartridges, trusted by artists around the world for precision, consistency, and reliability.
Engineered for professional tattooing, Kwadron cartridges are known for their precise needle groupings, smooth ink flow, membrane protection system, and exceptional needle stability.
Used daily by leading tattoo artists worldwide, Kwadron continues to set the benchmark for cartridge quality across all tattoo styles and techniques.
Precision needles. Stable groupings. Consistent performance. The cartridge trusted by professional tattoo artists worldwide.
Frequently Asked Questions
Who are Kwadron cartridges made for?
Kwadron cartridges are designed for professional tattoo artists who demand precision, consistency, and reliability throughout every tattoo session.
Why do artists choose Kwadron?
Kwadron is known for precise needle manufacturing, smooth ink delivery, stable needle performance, and dependable results from the first pass to the last.
What styles are Kwadron cartridges suitable for?
Kwadron cartridges are used for realism, black and grey, color realism, traditional, neo-traditional, Japanese, lettering, fine line, and large-scale tattoo work.
What cartridge configurations are available?
Kwadron offers round liners, round shaders, magnums, soft edge magnums, flats, curved mags, and specialty groupings to suit virtually any tattooing technique.
Do Kwadron cartridges use a membrane system?
Yes. Kwadron cartridges feature membrane protection designed to help prevent fluid and ink from entering the grip or machine.
How should cartridges be used safely?
Always use sterile cartridges, inspect packaging before use, never reuse disposable cartridges, and follow professional hygiene standards for every procedure.
KWADRON CARTRIDGES
Kwadron cartridge needles are the go-to choice for professional tattoo artists who demand precision, consistency, and reliability on every pass. Each cartridge features a safety membrane to prevent ink backflow, and is EO gas sterilized for safe use in any studio environment. Available in Liners, Curved Magnums, and Round Shaders across a full range of sizes and groupings. Shop the complete Kwadron cartridge lineup at BNG Tattoo Supply — in stock and shipping across Canada.