on salePineider Avatar UR Twin Tank Touchdown Fountain Pen - Graphene Black

Product Code PD-PP5601-421EF

In Stock

out of stock

on salePineider Avatar UR Twin Tank Touchdown Fountain Pen - Graphene Black

Product Code PD-PP5601-421EF

In Stock

out of stock


MSRP $328.00

Graphene Black
Nib Guide

Not sure which size nib is best for you?

Try our Nib Nook tool to view and compare nib widths using our writing samples. Learn more ›

The Pineider Avatar UR Twin Tank Touchdown, or Avatar TTT for short, takes some of the best of the original Avatar's features like the "Unbreakable Resin" material, and adds a new filling mechanism. The Twin Tank Touchdown features two ink chambers: one large ink reservoir that serves as a reserve for longer writing sessions, and a small ink reservoir that is always connected to the nib for shorter writing sessions.

The ink is drawn up into the pen via the vacuum filler on the back of the barrel. The piston knob can be set in either a "lock" or "unlock" position. "Lock" prevents ink from the larger reservoir from entering the smaller ink reservoir and also helps prevent ink leakage in transit. "Unlock" allows continuous ink flow between the two ink chambers for longer writing sessions.

This fountain pen is made from a material called "Unbreakable Resin", or UR for short, that is highly resistant to cracks or damage if dropped. The barrel is a translucent black, and the cap is solid black. It is complemented by silver trim, features a magnetic cap closure, and comes equipped with a #6 sized steel nib.

Fountain Pens

Whether or not the barrel of the pen is translucent, allowing you to see the ink and filling mechanism inside.

Body Material
Cap Type

How the cap is opened/closed from the barrel of the pen. Some common options include Snap-Cap, Screw-Cap, Magnetic Cap, or Capless (no cap).

Magnetic cap
Compatible inks & refills

Which ink this pen will accept. Choices include bottled ink and various styles of pre-filled ink cartridges.

Bottled inks
Filling Mechanism

How the pen fills with ink. Click here to watch our video tutorial on common filling mechanisms.

Vacuum filler
Grip Material
Nib Size
Nib Color
Nib Material

Whether or not the cap fits securely onto the back of the barrel when open.


Whether or not the nib/tip can retract into the body of the pen (usually for click or twist-open style pens).

Diameter - Body
13.1mm (0.52in)
Diameter - Cap (without clip)
14.3mm (0.56in)
Diameter - Cap (with clip)
18.5mm (0.73in)
Diameter - Grip (mm)

Measured from the place most people choose to rest their fingers, which varies with each pen.

Length - Body

The measurement from the back end of the barrel to the tip of the nib.

138.7mm (5.46in)
Length - Cap
64.5mm (2.54in)
Length - Nib

The measured length of the visible portion of the nib when it is installed in the pen, from grip to tip.

23.6mm (0.93in)
Length - Overall (Closed)
152.9mm (6.02in)
Length - Overall (Posted)

When the cap of the pen is posted onto the back of the pen body, this is the measurement of the entire pen including the nib.

164.2mm (6.46in)
Weight - Body

If a converter is included with the pen, this weight is reflected in the total.

17g (0.60oz)
Weight - Cap
10g (0.35oz)
Weight - Overall (g)
Max Ink Capacity - Piston Vac

The maximum volume of ink that can fit in the pen when using the built-in piston or vacuum filling mechanism.


Customer Reviews

Based on 6 reviews
Good pen with one design flaw

This pen has one design flaw most people aren't talking about, and it has to do with how the rear cap works.With other vac fillers including the Pilot 823 and TWSBI pens, the rear cap is a screw cap. To open up the front ink reservoir, you partially unscrew the rear cap, which means the cap is still securely attached to the body, and it won't come out if you tug on it.With this Pineider, the rear cap is not a screw cap. It's spring loaded with hooks. To open up the front ink reservoir, you untwist the rear cap, and the spring pushes it out, leaving the rear cap and plunger rod complete loose, and you can pull it out by accident. To make things worse, if you post your cap in this state, the cap can actually pull out the rear cap and plunger rod when you take it off. And when the plunger rod is pulled out, you'll be forced to expel all of the ink in the pen when you push it in. This has happened to me once and fortunately I had access to a sink. Otherwise I would've been screwed. This is otherwise a good pen. It just has this one flaw likely because it wants to be different, forgoing the tried-and-true conventional vac filler design.

Great all-around fountain pen

Purchased this pen along with others over the past few months and this is the most pleasant pen I found so far. I enjoy the filling mechanism more than the 823 because it's easy to clean. The EF nib is nowhere as fine as the Sailor EF or the Platinum UEF but it's thin enough for small handwriting and very smooth - it writes the way I wish the Lamy 2K EF would write. I prefer a more shapely grip section but this one feels good and other things I like about this pen overshadow my preference. The cap is unmatched by any other pen that I have - when the next "Goulet Quick Draw" video comes out I'm expecting this pen to be in the running. The Pineider Avatar UR Twin Tank is a pen that offers much more than the sum of its parts. It's so easy to use that I'm certain it will soon be taken for granted as I grow accustomed to using the pen. That's how I know that this is a good pen.

Frank R.
Pineider TTT

I got this pen for making journal entries while traveling. I have flown once with it and experienced no leakage with the small tank empty and the pen sealed. I ordered the fine nib that puts down a line of ink that is thinner and drier that expected but should work out fine on quality paper. This is with the bonus ink that came with the pen- Private Reserve, Chocolat. I will try other, wetter inks before another trip. Over all, it is a good addition to my pen collection and much more affordable that the Visconti Homo Sapiens with the dual reservoir filling system. I will also travel with my Pilot custom 823 but it does not have a duel reservoir. Both pens have large ink volumes that can be sealed off during flight. On extended travel I will take the Visconti Travelling Ink Pot.

Thomas M.
Amazing Pen

I love this pen so much that another Pineider is on the horizon. The steel nib writes quite smooth. The fit and finish are top notch, and it is all held together without adhesives. This is an excellent pen!

Kevin J.M.
Pineider Twin Tank

I rarely write reviews, however, this pen is so outstanding I felt duty-bound to give my thoughts. The filling system is great, the nib writes perfectly (smooth with a great ink flow). The overall appearance of the pen is great! I can't really come up with any negatives. Even the price is reasonable considering what your getting for your money.

FAQs about Fountain Pens

How do I fill a fountain pen with ink? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

It depends on the pen's filling mechanism, which you can find in the Technical Specs section above. 

Here's a quick definition of the most common filling mechanisms:

  • Cartridge - A small, disposable, sealed plastic reservoir that holds fountain pen ink. These come pre-filled with ink, and typically you just push to insert them into place and you'll be ready to write! Check out our quick guide here.
  • Converter - A detachable and refillable ink reservoir that allows you to use bottled ink in a cartridge-accepting pen. Typically you will install the converter into the grip section, dip the nib/feed into the ink, and twist or pull the converter knob to draw ink into the converter. Here's a video for how to fill a cartridge/converter pen using a LAMY pen as an example.
  • Eyedropper - A pen that utilizes the entire barrel as a reservoir for ink. Ink is directly filled into the barrel, allowing for a high ink capacity. Here's a video on how to do it!
  • Piston - A type of filling system that uses a retracting plunger inside a sealed tube to draw ink into a pen. They are typically either twist or push-operated. These pens cannot accept cartridges or a converter, and only fill from bottled ink.
  • Vacuum - A push-style piston that uses pressure to fill the large pen body with ink. They seal the ink chamber when closed, making it ideal for flying without risk of leaking. Check out our video on how to use a vac filler here.

Check out more info on these filling mechanisms including a video on how to fill each one on our blog.

How do I clean a fountain pen? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

It depends on the filling mechanism, but it mostly comes down to flushing it out with water, and sometimes a little bit of Pen Flush if the ink is really stuck. 

It's a bit easier to show than to tell, so we've put together a few quick videos showing you the process:

How often do I need to clean my fountain pen? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

We recommend a good cleaning every 2 weeks, and any time you change ink colors. 

Water will usually do the trick, but we recommend you use our Goulet Pen Flush if the ink has been left in the pen for a while and could have dried up, or when you’re switching ink colors.

My pen won’t write! What do I do? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

First things first... make sure you have ink in the pen! Be sure that the ink cartridge or converter is seated properly in the pen, and that you aren't out of ink.

We always recommend you give your pen a good cleaning first, using our Goulet Pen Flush, or a drop of dish soap in some water. New pens often have some machining oil residue left in the feed, so a good cleaning often does the trick first.

If that still doesn't work, try priming the feed. This consists of either dipping your pen nib and feed in ink, or forcing ink from the converter down into the feed. 

If it’s still not working after that, please reach out to us so we can help! 

What's your return policy? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

You can submit a return request within 30 days of your order date. You can read all our Return Policies here.

To initiate a return, please submit a request at the Return Portal. Our Customer Care team might reach out to you for more information.

Please note we are unable to accept a return of any Namiki or Sailor Bespoke fountain pen for any reason once it has been used with ink. Please thoroughly inspect and dry test the pen before use.