









🖋️ Power through every angle—write like a pro, rain or shine!
The uniball Power Tank RT Ballpoint Pen features a 1.0mm medium tip with a pressurized ink cartridge that writes smoothly in extreme conditions—including upside down, cold, and wet environments. Its indelible uni Super Ink resists water, fading, and fraud, while the textured rubber grip ensures comfort during extended use. This 12-pack of retractable, refillable pens is the ultimate tool for professionals who demand reliability and bold, clear writing no matter the challenge.





| ASIN | B001B0B04S |
| Additional Features | Retractable |
| Age Range (Description) | Adult |
| Age Range Description | Adult |
| Best Sellers Rank | #17,106 in Office Products ( See Top 100 in Office Products ) #391 in Ballpoint Pens |
| Body Shape | Round |
| Brand | Uni-Ball |
| Brand Name | Uni-Ball |
| Closure Type | Retractable |
| Color | Black |
| Customer Reviews | 4.7 out of 5 stars 1,053 Reviews |
| Drill Point | Bold |
| Global Trade Identification Number | 00070530420708, 50070530420703 |
| Grip Type | Ribbed |
| Hand Orientation | Ambidextrous |
| Hardness | HB |
| Included Components | 12 Ballpoint Pens |
| Ink Base | Hybrid |
| Ink Color | Black |
| Item Diameter | 5.63 Millimeters |
| Item Dimensions | 0.63 x 5.63 x 0.5 inches |
| Item Height | 0.5 inches |
| Item Type Name | Pen |
| Item Weight | 0.24 Pounds |
| Line Size | 1.0 mm |
| Manufacturer | Uni-Ball |
| Material | Plastic |
| Material Type | Plastic |
| Model Name | uniball™ POWER TANK RT |
| Model Number | 42070 |
| Pattern | Solid |
| Recommended Uses For Product | Writing |
| Style | 1.0 mm Medium |
| Theme | Cartoon |
| UPC | 799198174333 801593363240 799916153800 809302146511 809099276668 844998052111 638458798752 030246420706 800011406330 069060164091 806792164551 823019777110 800188045639 070530420708 641438674205 804993626243 640206536387 641438202484 780411900945 |
| Unit Count | 12.0 Count |
| Warranty Description | Contact Manufacturer |
| Water Resistance Level | Water Resistant |
| Writing Instrument Form | Ballpoint Pen |
W**I
Great pens.
The only pens I’ll use are Uniball. My fav the gel 207 impact is phenomenal, but this time around I decided to try a ball point. First thing I noticed was these aren’t as wide and bold as the 207 impact. They call it 1.0mm, but side by side you can clearly see this line isn’t as wide. I’d call it .7mm. What I do love is they are SMOOTH. They also will write on nearly anything and no smudges. The one thing I don’t like about gel. This ink dries as soon as you lay it down. The grip and feel is exactly what you’d expect from uniball. I’m also a fan of click on and off which these are vs pens with caps.
A**D
I agree - best pen ever!!!
I have been self-employed, working out of my home office, for over 25 years. So I have to provide my own office supplies with no employer to buy them for me. I go through a lot of pens in my work. I've tried about 25-30 different pens over that time and none have come close to the performance of these pens. Flawless performance - write first time, every time. No drying up, they write on almost anything, and they can even write vertically like on a list posted on a board or fridge without having to take the list down and put it on a dry, horizontal surface to write on it, like you have to do with all other pens I've tried. They are hard to find; even office supply stores don't carry them anymore. I can only find them here on Amazon. They're expensive, but worth it! They're expensive compared to regular pens that don't write inverted. But compared to other pens that write inverted, plus they add features worthless to me like able to write in space or underwater, these are far cheaper. I feel like I should hoard a bunch of them since it seems all the best products get discontinued. But even the ink in these great pens will eventually dry out, so it's not a good idea to stockpile them. All inks, dyes, paints, etc. have a limited useable life span. Just have to hope that I can continue to find them here.
J**1
Ink doesn't skip or smear.
The Uniball PowerTansmearing. .he best ballpoint pen on the market. The pen writes on most surfaces without skipping or smearing. The ink is dark and resistant to water, alcohol and acetone. The Power Tank is perfect for lab workers, medical personnel ie Paramedics,Nurses, Law Enforcement and any other profession that needs a dependable ballpoint pen. The pen comes in 7mm or 1mm point.
F**O
The best pen on the planet!!
I have purchased these great pens for many years. They are worth the price. You can always buy something cheaper and it will get the job done but there is something to be said to have a quality pen in your hands. Whether it's blue or black ink, any condition that you may be working it, these pens will work.
P**R
I never do 5 stars. The other reviews are correct for a change.
Write everywhere in any conditions, waterproof, always work. I use these for concrete, wood, timber, metals, etc. I use these instead of pencils on wood. nice sharp line to saw to. I've used all of the supposed bulletproof space pens and military pens over the years. They all work, but not as well as these do. However, all of those expensive super pens do one thing in my bibs and shirt pockets... they eventually break or bend! The metal pens also loose their clip tension and fall out and get lost. Even though they are plastic, these uni powerballs do Not break and I've not lost one yet. They do run out of ink quickly when used on porous surfaces, but otherwise They Get The Job Done Reliably! A rare reasonably priced product in todays bizznizzmen manipulated world. I keep 36 on the shelf to make sure I have them before they get changed for the worse, or the bizznizzmen up the price. The only thing that could make these better is if they sold 40 cent ink refill cartridges.
L**W
They write at any angle
This is my go-to pen of all time! I like to do crossword puzzles in bed before I go to sleep, and I had trouble with other pens not writing at that angle. These pens are perfect. They write every time, and the ink lasts a long time. I have them sitting all over the house and carry them in my purse. They write right away - you don't have to shake them or scribble a bit to get them started. I've reordered them more than once. The only criticism I would have is the clip is a bit awkward and in the way of a smooth hold. Wish the on/off clip was shorter or not there at all; maybe just a push down on/off from the top of the pen.
C**Y
Nice pens
I like the quality of these pens, they don't stop working after a few months
M**E
Smooth writing
I ordered these pens because my college professor raved about them. You can write on anything - even wet paper. Very good value for $.
Trustpilot
2 weeks ago
3 days ago