Curved Magnum (RM/CM) Cartridges for Smooth, Soft-Edge Shading
R&G Bio manufactures curved magnum tattoo cartridges for brands, distributors and studios that need soft-edge shading needles with stable, factory-direct quality.
Each cartridge holds two staggered rows of needles shaped into a soft arc. The curved layout delivers smooth black & grey shading and soft edges, gliding over the skin with reduced trauma.
Every cartridge is EO gas sterilized, batch-coded for full traceability, and produced in ISO Class 7 cleanrooms under an ISO 13485 quality system. Review our certifications and compliance documents and see how we manufacture before you place a bulk order.
We support full OEM/ODM programs — housing colors, private labeling and custom packaging built around your brand, with factory-direct MOQs and tiered wholesale pricing.
Model Reference
For example – 1005RM
10 – Needle Diameter (Gauge)
05 – Needle Count
RM – 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 / 23 / 27
Needle Type
RL = Round Liner
RS = Round Shader
M1 = Magnum (Double Stack)
RM = Round Magnum
CM = Curved Magnum
F = Flat Shader
RLT = Textured Round Liner
TRL = Turbo Round Liner
STL = Super Tight Liner
#10 SERIES · 0.30MM BUGPIN — SOFTER DEPOSIT, FINE BLENDING
|
MODEL |
GAUGE |
TAPER |
NEEDLE COUNT |
MEMBRANE |
STERILIZATION |
FIT |
TYPICAL USE |
|---|---|---|---|---|---|---|---|
|
1005RM |
#10 · 0.30mm |
Short 0.4mm |
5 |
Yes |
EO Gas · ISO 11135 |
Universal cartridge grip |
Small soft shading, portrait details, delicate grey wash |
|
1007RM |
#10 · 0.30mm |
Short 0.4mm |
7 |
Yes |
EO Gas · ISO 11135 |
Universal cartridge grip |
Smooth black & grey gradients, small realism work, gentle blends on curved areas |
|
1009RM |
#10 · 0.30mm |
Short 0.4mm |
9 |
Yes |
EO Gas · ISO 11135 |
Universal cartridge grip |
Everyday soft blending, medium gradients |
|
1011RM |
#10 · 0.30mm |
Short 0.4mm |
11 |
Yes |
EO Gas · ISO 11135 |
Universal cartridge grip |
Soft color blending, wider smooth coverage |
|
1013RM |
#10 · 0.30mm |
Short 0.4mm |
13 |
Yes |
EO Gas · ISO 11135 |
Universal cartridge grip |
Larger gradients, soft color transitions |
|
1015RM |
#10 · 0.30mm |
Short 0.4mm |
15 |
Yes |
EO Gas · ISO 11135 |
Universal cartridge grip |
Broad soft shading, background tones |
|
1017RM |
#10 · 0.30mm |
Short 0.4mm |
17 |
Yes |
EO Gas · ISO 11135 |
Universal cartridge grip |
Large-area soft blending and layering |
|
1023RM |
#10 · 0.30mm |
Short 0.4mm |
23 |
Yes |
EO Gas · ISO 11135 |
Universal cartridge grip |
Big-area fills, soft background coverage |
|
1027RM |
#10 · 0.30mm |
Short 0.4mm |
27 |
Yes |
EO Gas · ISO 11135 |
Universal cartridge grip |
Maximum soft coverage for very large pieces |
#12 SERIES · 0.35MM STANDARD — STRONGER INK FLOW, FASTER PACKING
|
MODEL |
GAUGE |
TAPER |
NEEDLE COUNT |
MEMBRANE |
STERILIZATION |
FIT |
TYPICAL USE |
|---|---|---|---|---|---|---|---|
|
1205RM |
#12 · 0.35mm |
Short 0.4mm |
5 |
Yes |
EO Gas · ISO 11135 |
Universal cartridge grip |
Small-area shading with stronger saturation |
|
1207RM |
#12 · 0.35mm |
Short 0.4mm |
7 |
Yes |
EO Gas · ISO 11135 |
Universal cartridge grip |
Black & grey gradients, small soft fills |
|
1209RM |
#12 · 0.35mm |
Short 0.4mm |
9 |
Yes |
EO Gas · ISO 11135 |
Universal cartridge grip |
Standard gradients and blending, daily shading work |
|
1211RM |
#12 · 0.35mm |
Short 0.4mm |
11 |
Yes |
EO Gas · ISO 11135 |
Universal cartridge grip |
Soft color packing on medium areas |
|
1213RM |
#12 · 0.35mm |
Short 0.4mm |
13 |
Yes |
EO Gas · ISO 11135 |
Universal cartridge grip |
Color realism, smooth large blends |
|
1215RM |
#12 · 0.35mm |
Short 0.4mm |
15 |
Yes |
EO Gas · ISO 11135 |
Universal cartridge grip |
Broad shading, smoke and background effects |
|
1223RM |
#12 · 0.35mm |
Short 0.4mm |
23 |
Yes |
EO Gas · ISO 11135 |
Universal cartridge grip |
Fast large-area color packing and backgrounds |
Built Like a Medical Device, Priced for Wholesale
We control every step in our own factory, from needle grinding to sterile packing.
01 Safety Membrane System
A medical-grade elastic membrane sits inside every cartridge. It keeps needle tension steady during long sessions and stops ink and body fluids from flowing back into the grip and machine. No backflow, no cross-contamination.
02 Polished Needle Tips
We use 316L surgical stainless steel with a mirror-polish finish. Smooth tips mean less friction in the skin, less trauma per pass, and cleaner healed results. Each arc is shaped by mold, so the curve stays identical across every batch.
03 Medical-Grade Housing
The shell is medical-grade polymer with a clear tip. Artists see the ink flow while they work. The body has a non-slip grip design, and the standard fitting works with most rotary machines and cartridge grips on the market.
01 EO Gas Sterilization
Every cartridge is sealed in its own blister pack and sterilized with EO gas. Our sterilization process is validated under ISO 11135, with batch records kept for full traceability.
02 Two-Stage Quality Control
Every unit passes 100% visual inspection on the line. Then 30% of each batch is checked again under 100x microscopy for tip shape, solder quality, and arc accuracy. Bent or dull needles never ship.
Why the Arc Matters
A flat magnum ends in a straight line. Its corner needles hit the skin harder and can leave visible edge marks.
Our curved magnum rounds those corners off. Pressure spreads evenly across the whole grouping, so the edges of every pass fade out softly.
That is why artists call this needle the “soft edge” magnum — and why it is the first choice for realism, portraits, and black & grey work.
Where Curved Magnums Work Best
One configuration, four core jobs. If the work needs soft edges and smooth tone, this is the needle.
Black & Grey Shading
The soft arc builds greywash tones in smooth layers. No hard borders between passes. Ideal for black & grey realism, soft shadows, and smooth tonal fades.
Smooth Gradients
Two staggered rows hold more ink and release it evenly. Color transitions blend without streaks or banding, even on curved areas like arms, shoulders, and ribs.
Color Realism
Portrait and realism artists use curved magnums to pack color softly and build skin tones. The edge of each pass melts into the next, so faces and details stay smooth.
Soft Shadows & Backgrounds
Smoke, clouds, water, out-of-focus backgrounds. Larger RM sizes fill big zones fast and keep the edges soft, so backgrounds blend into the skin instead of looking pasted on.
Small Number, Small Area. Big Number, Big Coverage.
Needle count sets the coverage width. Match it to the job — that is the whole logic.
5RM – 7RM
Small areas, portrait details, fine greywash
9RM – 13RM
Everyday blending, medium gradients
15RM – 17RM
Broad shading, soft backgrounds
23RM – 27RM
Large-area fills, fast coverage
Curved Magnum (RM/CM) vs Flat Magnum (M1)
Both are magnums. Both cover large areas. The difference is the edge: our curved layout removes the
sharp corners, so blends come out softer and lines stay out of the shading.
|
CURVED MAGNUM (RM/CM) |
FLAT MAGNUM (M1) |
|
|---|---|---|
|
Needle Layout |
Two staggered rows in a soft arc |
Two staggered rows in a straight line |
|
Edge Finish |
Soft, feathered edges — no line marks |
Harder edges, defined borders |
|
Skin Trauma |
Lower — corner needles are lifted |
Higher at the corners |
|
Best For |
Blending, gradients, realism, portraits |
Bold packing, solid fills, flat areas |
|
Body Contours |
Follows curves (arms, ribs, shoulders) |
Best on flat skin zones |
Need hard-edge packing instead? See our Flat Magnum (M1) cartridges.
Our Certifications
R&G Bio is an integrated manufacturer with verified FDA registration, ISO 13485 / ISO 9001 certification and EU RoHS compliance — the documentation your market actually requires.
Wholesale & OEM Programs
Factory-direct supply with full batch traceability. Tell us your sizes and target volume — we reply within 12 hours with a full quotation.
MOQ from 1,000 pcs
Standard sizes start low; mixed sizes allowed in one order.
Tiered Factory Pricing
The more you take, the lower the unit cost. Full price ladder with every quotation.
Fast Lead Time
Standard sizes ship from running production; OEM timelines confirmed with your quote.
Private Label & OEM
Your brand, built on our production lines — in-house design and engineering support.
Qualified B2B buyers can request a free sample kit before committing to an order.
FAQs
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Find Expert insights
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.
OEM / ODM SERVICES
Contact us for wholesale pricing and custom configurations
Get In Touch
Request a Quotation
Tell us about your requirements and our team will respond within 24 hours with a detailed quote including pricing, lead times, and customization options.