MEDICAL-GRADE MANUFACTURING
Professional Magnum Tattoo Cartridges for Shading and Color Packing
At R&G Bio, we manufacture disposable tattoo needle cartridges for tattoo shops, distributors, and permanent makeup artists worldwide.
Our magnum line covers both weaved magnum (M1) and curved magnum (RM). The needles sit in two parallel rows. M1s lay down solid, saturated color fast—good for packing large fields, knocking out backgrounds, and traditional black-and-grey shading. RMs have a curved edge that diffuses the ink more evenly, so the blends come out softer. Artists tend to reach for those on curved body parts where skin contour matters, or any piece that needs a smooth gradient without visible edges.
We stock 5M1/RM through 27M1/RM, in #10 (0.30mm) and #12 (0.35mm). Big fills or subtle shading, either way, there’s a configuration that fits.
Every cartridge ships with a membrane to block backflow. Each one is individually packaged and EO gas sterilized, with full batch traceability. Needles are 316L surgical stainless steel, housings are medical-grade polymer, and everything is manufactured in ISO Class 7 cleanrooms under ISO 13485.
We also handle OEM and ODM orders: private labels, custom configurations, MOQ starting at 20,000 units.
Dual-Row Parallel
Max Ink Saturation
Safety Membrane
OEM/ODM Ready
Model Reference
For example – 1005M1
10 – Needle Diameter (Gauge)
05 – Needle Count
M1 – Needle Configuration
Needle Diameter (Gauge)
10 = #10 (Standard, approx. 0.30 mm)
12 = #12 (Standard, approx. 0.35 mm)
Needle Count
05 / 07 / 09 / 11 / 13 / 14 / 15 / 17 / 18 / 23 / 27
Needle Type
RL = Round Liner
RS = Round Shader
M1 = Magnum (Double Stack)
RM = Round Magnum
Weaved Magnum (M1) — The Industry Workhorse
🔬 Needle Structure
M1 is the standard magnum most artists learn on. The needles come in two offset rows, staggered like a zipper. That weave lets the ink hit the skin evenly across the full width of the needle group, so you don’t get the gaps or striping that flat shaders leave behind.
The number is the total needle count across both rows. A 7M1 or 9M1 works for general shading. A 15M1 or 27M1 covers big fields, full backs, sleeve backgrounds, anything that needs fast, solid packing. The offset pattern means you can move in any direction. Circles, whip shading, pendulum motion—the edges stay soft and the fill stays even.
Curved Magnum (RM) — Soft Edge & Portrait Precision
🔬 Needle Structure
Curved Magnums, also called Soft Edge or Round Magnums—arrange the needles in an arch instead of straight rows. That curve follows how skin actually sits on the body, so the edges of a shaded area fade naturally instead of cutting off with a hard line.
The curved layout spreads needle pressure more evenly across convex surfaces. You don’t get those sharp edge lines that straight magnums sometimes leave at the border of a shaded area. Artists tend to grab RMs for photorealistic work, portrait shading, and PMU applications—anywhere the gradient needs to disappear completely and the skin needs to look like skin, not like it was tattooed. Soft powder effects, smooth tone transitions, any piece where a visible needle track would break the realism.
Primary Uses & Applications
Large Area Shading: Background fills, sky, water, smoke, and atmospheric effects in large-scale pieces
Solid Color Packing: Filling bold color areas quickly with maximum saturation per pass — essential for Neo-Traditional and Japanese styles
Traditional Shading: Classic black & grey smooth gradients for Old School, Japanese Irezumi, and tribal work
Black & Grey Shading: Creating deep, saturated dark areas and smooth transitions from black to skin tone
Whip Shading & Pendulum: The weaved pattern excels at circular and oscillating shading techniques
Background Work: Filling large background areas behind main subject matter with consistent, even tone
Primary Uses & Applications
Portrait Realism: Smooth skin tones, subtle shadow transitions, and lifelike texture in photorealistic portraits
Black & Grey Gradients: Ultra-soft transitions from dark to light without visible edge lines — essential for realism and Chicano styles
Delicate PMU Shading: Powder brows, ombre lips, and soft eyeliner gradients where harsh edges are unacceptable
Watercolor Tattoos: Soft, flowing color blends and bleeding effects that mimic watercolor painting techniques
Soft Edge Blending: Blending the edges of colored areas into skin tone without hard borders
Curved Body Areas: Shading on shoulders, knees, elbows, and facial contours where flat needles create uneven pressure
M1 vs RM — When to Use Which
|
Feature |
Weaved Magnum (M1) |
Curved Magnum (RM) |
|---|---|---|
|
Needle Arrangement |
Two straight parallel rows, staggered/weaved |
Single curved arch, convex profile |
|
Edge Quality |
Clean, defined edges |
Soft, feathered, diffused edges |
|
Ink Saturation |
Maximum — fastest coverage |
Moderate — softer deposit |
|
Best For |
Color packing, large fills, traditional shading |
Portraits, soft gradients, PMU, realism |
|
Skin Trauma |
Moderate — fewer passes needed |
Low to moderate — gentler on edges |
|
Technique |
Whip shading, circular motions, pendulum |
Soft brushing, feathering, stippling |
|
Coverage Speed |
Fastest — widest coverage per pass |
Moderate — precision over speed |
|
Popular Styles |
Traditional, Neo-Traditional, Japanese, Tribal |
Realism, Black & Grey, Portrait, PMU, Watercolor |
Common M1/RM Configurations
* 5M1 – “5” indicates Needle Count
5M1
Small Fills
Detail Shading
7M1
Medium
Shading
9M1
Standard
Fills
11M1
Large Area
Coverage
15M1
Extra Large
Packing
23M1
Maximum
Coverage
5RM
Small Soft
Shading
7RM
Portrait
Details
9RM
Standard
Gradients
11RM
Large Soft
Blends
15RM
PMU Powder
Brows
23RM
Max Soft
Coverage
Technical Specifications
|
Material |
316L Medical Stainless Steel |
|---|---|
|
Needle Diameter |
#10 (0.30mm) / #12 (0.35mm) |
|
Taper Length |
Long (5.5mm) / Medium (3.5mm) |
|
M1 Configuration |
2 parallel rows, weaved/staggered offset |
|
RM Configuration |
Single curved arch, convex profile |
|
Safety Feature |
Patented anti-backflow membrane |
|
Sterilization |
EO Gas, individually blister packed |
|
Packaging |
20 pcs/box (standard) / Custom OEM |
Explore Different Cartridges
Tattoo Cartridges with Membrane
Magnum tattoo cartridges
Round shader tattoo cartridges
Round liner tattoo cartridges
Round Magnum Tattoo Cartridges
Tight Round liner tattoo cartridges
Hollow Round liner tattoo cartridges
Bugpin Round liner tattoo cartridges
About R&G Bio
Built on Precision.
Trusted Globally.
Where Precision Meets Medical-Grade Standards
ISO 13485 certified facility with ISO Class 100,000 cleanrooms. 316L surgical steel, complete traceability.
End-to-End Manufacturing Control
From needle configuration to sterile packaging, every step is precision-controlled with automated assembly and batch tracking.
Meeting International Regulatory Standards
CE Mark, FDA Registered, KFDA Approved, ISO 13485, RoHS Compliant. Full documentation for global market entry.
Trusted Tattoo Needle Manufacturer Since 2009
15+ years serving 50+ countries with premium cartridge tattoo needles and flexible OEM/ODM solutions.
FAQs
OEM / ODM SERVICES
Contact us for wholesale pricing and custom configurations
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