Tattoo Needle Groups Explained (In Simple Terms)

Tattoo Needle Groups Explained (In Simple Terms)

If you’re new to tattooing, all the different needle names like RL, RS, M1, RM can look confusing. But once you understand the basics, it’s actually pretty simple. This guide breaks it down in plain English—no complicated jargon.

This information is the same for standard needle bars and Cartridges

🧠 What are tattoo needle groups?

Tattoo needles aren’t just one needle—they’re groups of tiny needles soldered together in different shapes.

Each shape is designed for a specific job, like:

• Drawing clean lines
• Shading areas
• Packing in solid colour

Think of them like different types of paintbrushes—each one gives a different effect.

✏️ Round Liners (RL) – For clean lines

What they look like:
A tight, circular cluster of needles pulled close together.

What they do:

• Crisp, clean lines
• Outlines and fine detail

Best for:

• Linework
• Lettering
• Small details

👉 Simple way to think of it:
Like using a fine-tip pen

🖊️ Round Shaders (RS) – Softer shading

What they look like:
Similar to liners, but the needles are spaced out a bit more.

What they do:

• Light shading
• Softer lines than RL

Best for:

• Small shaded areas
• Basic colour filling

👉 Think of it as:
A slightly thicker pen that blends a bit.

🎨 Magnum (M1) – Main shading tool

What they look like:
Two rows of needles stacked in a flat shape.

What they do:

• Smooth shading
• Colour packing
• Covering larger areas

Best for:

• Realism
• Black & grey work
• Colour fills

👉 Think of it as:
A paintbrush for bigger areas.

🌈 Curved Magnum (RM / Soft Edge) – Smooth blends

What they look like:
Like a magnum, but curved at the edges.

What they do:

• Softer shading
• Better blending
• Less trauma to the skin

Best for:

• Portraits
• Smooth gradients
• Professional work

👉 Think of it as:
A soft makeup brush

🧱 Flat (F) – Straight edges

What they look like:
A straight line of needles.

What they do:

• Bold lines
• Geometric shapes
• Sharp edges

Best for:

• Traditional tattoos
• Straight-line work

👉 Think of it as:
A chisel-tip marker

🔢 What do the numbers mean? (e.g. 1209RL)

This part confuses everyone at first, but it’s easy:

• 12 = needle thickness
• 09 = number of needles
• RL = type (Round Liner)

👉 So 1209RL = 9 needles in a liner shape

🧠 Quick cheat sheet

• RL = lining (sharp, clean lines)
• RS = light shading
• M1 = shading & colour packing
• RM = smooth shading/blending
• F = bold, straight lines

• 💡 Final tip

  You don’t need every needle to start. Most artists begin with:

  • A liner (RL)
  • A magnum (M1 or RM)

  That alone can handle most tattoos.

✅ Bottom line

Tattoo needles aren’t complicated once you see them like tools:

• Liners = pens
• Magnums = paintbrushes
• Shaders = blending tools

Learn what each one does, and you’ll instantly understand why artists choose different needles for different parts of a tattoo.

We recommend Rustii Tattoo Cartridges | Professional Tattoo Needles – Tattoo Everything Supplies