Complete guide: TATTOO NEEDLES CARTRIDGE KWADRON RM
Kwadron RM (Round Magnum) cartridges are disposable tattoo needles with the grouping arranged in a fan shape, with slightly curved tips — a design intended for shading and fine chromatic transitions, with reduced skin trauma compared to a flat magnum. They are manufactured in Poland from surgical stainless steel 316L, have a safety membrane that prevents ink and fluid backflow, and come individually sterilized with ethylene oxide, in a blister. They are the natural choice if you work with realism, portraits, color packing, or any piece that requires gradual transitions, and the standard grip makes them compatible with regular tattoo pens.
How to use
- Check the blister before anything: it must be sealed and undamaged, and the expiration date on the packaging must be valid. The packaging also includes the batch number and manufacturing date for traceability.
- Prepare the work station: sanitized hands, new disposable gloves, and protective barriers on the pen, clip cord, and surfaces.
- Remove the cartridge from the blister without touching the tip and secure it in the pen with standard grip until it locks firmly.
- Adjust the needle exposure on the pen according to technique: smaller exposure for delicate shading, larger for dense saturation.
- Set the voltage starting low — the manufacturer's description indicates approximately 6–8 V for fine shading and 8–10 V for dense color packing — and increase gradually until you achieve the desired result on that skin.
- Load the tip with ink and work with circular or pendulum motions, letting the curved configuration distribute the pigment evenly on the surface; the internal membrane prevents backflow to the pen.
- When changing color, rinse the tip in a dedicated container with clean rinse water, used only for the current client.
- At the end of the session, immediately dispose of the cartridge in the sharps container — it is strictly single-use.
Tips from us
- Choose the configuration according to the area: 7RM for small areas and details, 9RM–11RM for medium-sized work, 13RM–15RM for large surfaces, and 17RM–23RM for quick background fills.
- For portraits, the manufacturer recommends 9RM or 11RM with a 0.30 mm needle — a good balance between coverage and fine control of transitions.
- Use RM for soft transitions and gradual shading; if you need dense and uniform coverage on large surfaces, a flat magnum (M1) is more suitable.
- For peppered shading, small configurations (7RM–9RM) with quick in-and-out motions and minimal needle exposure give the specific textured effect.
- Record the batch number and expiration date from the packaging in the client's file — complete traceability is a real plus in case of an inspection or a complaint.
- Start any piece at low voltage and increase gradually; soft transitions are built from repeated light passes, not from a single aggressive pass.
Warning: The cartridges are sterile only as long as the blister remains intact: never use a cartridge with damaged, unsealed, or expired packaging. Do not resterilize or reuse a cartridge under any circumstances — it is a single-use product, and the anti-reflux membrane does not replace hygiene rules. Work with gloves and protective barriers, and used cartridges must be disposed of exclusively in a sharps container, according to hygiene standards for tattoo studios.
Frequently asked questions
Do Kwadron RM cartridges fit my machine?▾
Yes, if you use a tattoo pen with a standard cartridge grip — Kwadron RM is compatible with all pens using this system. Just make sure your machine is a cartridge-based one, not a classic machine with needles on a bar, where cartridges cannot be mounted.
What does the number in the name mean, for example 9RM?▾
The number in front indicates exactly how many needles the grouping contains: a 7RM has 7 needles, a 9RM has 9, and so on. The range goes from 7RM to 23RM and beyond, and 'RM' stands for Round Magnum — needles arranged in a fan shape with curved tips. The higher the number, the larger the surface you cover in one pass.
What is the difference between RM and M1 and which one should I choose?▾
RM (Round Magnum) has needles arranged in a fan shape with curved tips, which gives soft transitions and gradual shading — that's why it's preferred for portraits and realism. M1 (Magnum) has needles arranged flat in two rows and offers denser and more uniform coverage, suitable for color packing on large surfaces. If you work a lot with gradients and sensitive skin, RM is the gentler choice.
Can I draw lines with an RM cartridge?▾
Not for classic lining — the curved configuration distributes ink over too wide an area for precise lines, so for outlines use RL (Round Liner) cartridges. Experienced artists do use small RMs, for example 7RM, for whip shading or textural effects, where that wide distribution is actually an advantage.
Can I reuse a cartridge on the same client at a future session?▾
No. The cartridge is single-use: it is individually sterilized with ethylene oxide and remains sterile only until the blister is opened. Once used, it comes into contact with biological fluids and cannot be resterilized at home or in the studio under safe conditions. It is disposed of in the sharps container at the end of the session, and at the next appointment you open a new cartridge in front of the client.
How can I tell if a cartridge is okay before using it?▾
Check three things: the blister must be perfectly sealed, without holes or detached corners; the expiration date on the packaging must not be past; and upon unpacking, the tip must look intact, without bent needles. Kwadron packaging includes the batch number and manufacturing date, so you can keep records for each client. If any of the checks fail, do not use the cartridge.
Product description
Kwadron RM (Round Magnum) cartridge needles are the essential instrument for shading and fluid chromatic transitions in professional tattooing. These curved magnum needles are manufactured in Poland from 316L surgical stainless steel, featuring a curved needle grouping design that enables uniform ink distribution across a wide surface area. The Round Magnum configuration arranges needles in a fan formation with slightly curved tips, reducing skin trauma and delivering softer transitions compared to a standard flat magnum. The integrated safety membrane in each cartridge completely prevents backflow of ink and biological fluids, meeting the highest hygiene standards. The standard taper provides optimal penetration for shading techniques — from delicate blending to dense saturation. Individual ethylene oxide sterilization and blister packaging guarantee sterile integrity. Compatible with all standard-grip tattoo pen machines. Available in configurations from 7RM to 23RM and above, these cartridges are preferred for color packing, realistic shading, portraits, and any work requiring gradual transitions. Kwadron RM delivers the consistency professional artists demand — ink distributes evenly without patches or uncovered areas. Kwadron's manufacturing process includes multiple quality control stages: 316L raw material selection from certified suppliers, precision CNC forming and sharpening, sub-micrometric polishing, membrane assembly in a clean room environment, and EO gas sterilization with individual integrity verification. The result is a product that professional artists can use with complete confidence, knowing every cartridge will perform identically to the previous one. Packaging includes complete information about batch number, manufacturing date, and expiration date, enabling full traceability of every product.
Frequently Asked Questions What is the difference between Kwadron RM and Kwadron M1? Kwadron RM (Round Magnum) has needles arranged in a fan with curved tips, providing soft transitions and gradual shading. Kwadron M1 (Magnum) has needles arranged flat in two rows, providing denser, more uniform coverage. RM is preferred for portraits and realism, while M1 is chosen for dense color packing and large uniform areas. What RM Kwadron configuration do you recommend for portraits? For portraits, we recommend Kwadron RM in 9RM or 11RM configurations with 0.30mm needles. These configurations offer the ideal balance between coverage and fine transition control. For small areas and details, a 7RM is perfect, while for large background areas, a 15RM or 17RM will speed up the process without sacrificing quality. Can I use Kwadron RM for lining as well? Technically, RMs can be used for whip shading techniques or textured lines, but they are not designed for classic lining. The curved configuration distributes ink over too wide an area for precise lines. For lining, always use Kwadron RL. However, experienced artists use small RMs (7RM) for specific textural effects. What is the optimal pen speed for Kwadron RM? For Kwadron RM, the optimal pen speed ranges from 6-8V for delicate shading and 8-10V for dense color packing. Lower speed allows softer transitions and superior control, while higher speed saturates faster. We recommend starting at low voltage and gradually increasing until you achieve the desired result on the specific skin type. What makes Kwadron Round Magnum different from other brands? Kwadron RM stands out through the precise and consistent curvature of needles, achieved through a controlled manufacturing process in Poland. Unlike generic brands, each needle is individually polished, eliminating micro-imperfections that cause skin trauma. The Kwadron membrane has superior sealing, and the 316L steel is certified medical grade. How many needles do the available Kwadron RM configurations contain? Kwadron RM is available in configurations starting from 7RM (7 needles) up to 23RM (23 needles) and even higher. The most popular are 9RM and 11RM for medium-sized work, 13RM-15RM for large areas, and 17RM-23RM for rapid background fills. The number before RM indicates exactly how many needles the grouping contains. Is Kwadron RM suitable for peppered shading technique? Yes, Kwadron RM is an excellent choice for peppered shading due to the curved configuration that allows partial needle contact with the skin. Using a rapid in-and-out motion with minimal needle exposure, you achieve the specific textured effect. Smaller configurations like 7RM or 9RM are ideal for this technique. What penetration depth do you recommend for Kwadron RM? For Kwadron RM, the optimal penetration depth is 1.5-2mm into the dermis, adjusted from the pen. For delicate shading, reduce needle exposure to 1-1.5mm. For dense color packing, increase to 2-2.5mm. The correct depth depends on the body area and skin type — areas with thin skin require less penetration to avoid blow-out. How do you clean and maintain the pen after using Kwadron RM? After using Kwadron RM cartridges, remove the used cartridge and dispose of it in the biological waste container. Fully disinfect the pen with an approved disinfectant solution. Wipe the grip and body with disinfectant wipes. Autoclave detachable components if the pen manufacturer allows it. Never reuse a cartridge — they are strictly single-use. What advantages do Kwadron RM cartridges have over traditional bar needles? Kwadron RM cartridges offer major advantages: instant switching between configurations without stopping the machine, anti-contamination safety membrane absent in bar needles, much faster setup and cleanup, compatibility with modern pens that are quieter and lighter. The minor disadvantage is slightly higher per-unit cost, offset by superior operational efficiency.
