Posts filed under Energel

Pentel EnerGel Kuro Gel Ink Pen Review

Pentel EnerGel Kuro Gel Ink Pen Review

(Sarah Read is an author, editor, yarn artist, and pen/paper/ink addict. You can find more about her at her website and on Bluesky. And her latest book, The Atropine Tree, is now available!)

It's back-to-school season! Admittedly, the majority of the stationery supplies I have to acquire for my children at this time of year are not as exciting as the stationery I'd like to be playing with, but ALL stationery is fun in its own way. I wish I could send my kids to school with a box of Blackwing pencils, but it will have to be the store-brand #2 classics, as requested by The List.

But pens? We can have a little fun there. Gel pens are a staple of note taking in school, but The List doesn't say what kind they have to be. We have our old reliables, but it's always fun to try something new.

Pentel EnerGel Kuro

Pentel has a new build of their EnerGel model called the Kuro, and I think it's the perfect gel pen for this year's school adventures.

The Kuro has a slim body in a black rubberized material that is all non-slip and slightly cushioned, and the grip area has extra texture to it. It's smooth, but textured enough that your fingers don't slip on the barrel. It has a lightly flexible plastic clip and a click button top. The clip and click are in the color of the pen's ink, for easy identification.

Pentel EnerGel Kuro Tip

The tip is 0.7 mm, and it writes very smoothly. It downright glides. I had no skipping or blobbing with these, and I've been using them all day every day at work for a week.

Pentel EnerGel Kuro Ink

The ink is nicely saturated with bold, bright colors available in the set. This set has black, purple, pink, red, blue, light blue, green, and orange--enough colors for some excellent color coding. There are also 12- and 24-color sets available, as well as individual pens. They've been great in my planners, especially because they have a quick-dry, no-smear ink. They are also refillable. The nose cone unscrews to access the Pentel LR7 refill.

Pentel EnerGel Kuro Refill

The 8-color set costs $13.50, with individual pens costing around $2, and refills cost $1.35. Overall, they're one of the more affordable gel pens out there right now, which makes them even better for school, where pens vanish into the portal that lurks at the bottom of every backpack.

I've really enjoyed writing with these pens. And while I've turned the standard colors over to my children for school, the pink, purple, and light blue have stayed on my desk at work. Because mom has homework, too, and everyone needs good gel pens.

(JetPens provided this product at no charge to The Pen Addict for review purposes.)


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Pentel EnerGel Kuro Package
Posted on August 21, 2025 and filed under Pentel, Energel, Gel, Pen Reviews.

Pentel Energel RTX 0.7 mm Lilac Gel Ink Pen Review

Lilac is my wife’s fourth favorite Pentel Energel RTX color.

How do I know this? She told me yesterday, when sharing that she was out of her favorites.

On Mother’s Day.

R.I.P., Mr. Pen Addict.

I should have been more prepared. But hey, if I was, I wouldn’t have this article to write, late on Sunday night.

We had a great weekend. We were at a Pickleball tournament all day Saturday (duh,) and Sunday, I spent all day with her, the kids, and our respective moms, both of whom live nearby. I usually sneak in a few hours of work during the weekend, finalizing whatever review post I’m planning on for Monday. But I was still running behind this weekend, with the Chicago Pen Show and Grand Jury Duty still in the rear-view mirror. And, I was having too much fun otherwise.

Around 7 p.m. Sunday night I told her I needed to work for a bit, at least settle on a topic for Monday - even if I finish in the morning. She said “Why don’t you write about my favorite pen?” Dang, she is a smart one.

I already knew what the pen was, the aforementioned Pentel Energel RTX. So I said, “Great idea! Grab me your favorite color and I’ll write it up.”

She couldn’t find Navy Blue.

She couldn’t find Turquoise.

She couldn’t find Violet.

With every miss, my guilt increased.

She finally settled on Lilac, which she told me was her second favorite purple, and still one she liked a lot. So, Lilac it is!

Any Pentel EnerGel is easy to review. I already love them, and they are my favorite gel ink pen to recommend for most users looking for a high-quality 0.7 mm gel ink line, and a wide variety of colors. Is this pen my favorite gel ink pen? No, that honor goes to the Uni-ball Signo UM-151, which I can get in my favorite 0.38 mm tip size, and the same variety of ink colors.

Most people aren’t me, “fortunately,” my wife would interject, and the Pentel EnerGel is the best of the rest for the wider audience.

She has used this pen for years, putting them through the wringer at her job on a daily basis. Not once has she had a bad word to say about it. The refill writes smoothly and consistently, the barrel is sturdy, the knock never fails, the clip always works, and so on. The only complaint is that she can’t keep people from stealing them.

Maybe that is the next frontier for pens - in-barrel tracking devices to reclaim your favorite from grabby hands. (Cross tried, but it didn’t stick.)

When I use one of her EnerGels around the house - mainly for grocery lists, or on sticky notes on her desk - I always enjoy them. They are a real treat to use, and the ink colors are fun. Pentel has made other options that are close to making my every day rotation, like the Euro or Clena, but never the perfect one to land in that rare S-tier air. They are A-tier all day long, which is a pretty great place to be.

Myself, I’m not in as good of a place. I’m in the doghouse until I get her pens ordered, and delivered. Time to make that happen!


Enjoy reading The Pen Addict? Then consider becoming a member to receive additional weekly content, giveaways, and discounts in The Pen Addict shop. Plus, you support me and the site directly, for which I am very grateful.

Membership starts at just $5/month, with a discounted annual option available. To find out more about membership click here and join us!

Posted on May 15, 2023 and filed under Pentel, Energel, Pen Reviews.