Pilot FriXion Ball Knock Retractable Gel Ink Pen - 0.5 mm - Blue Black

In stock and ships within 1 business day.
3.8 (6 reviews)
The long awaited retractable version of the popular Pilot FriXion line is here! Pen features the same beloved thermo-sensitive ink that can be erased by friction, but now comes in a sleek, retractable body. Just push the clip to extend and retract the tip. A subtle yellow color appears along the barrel side to show when the pen is extended. The special rubber tip at the end allows you to erase conveniently without having to cap or uncap your pen. The pen writes smoothly and erases without a trace! Refills available for select ink colors and point sizes only.

Interestingly enough, the ink in these pens will actually reappear when the temperature reaches below - 10 C (under 14 Fahrenheit). A freezer is sufficiently cold enough to make the ink start to reappear. It is like a magic pen for adults!

Because the ink in this pen is thermo sensitive, we do not advise for it to be left in hot cars, used for mailing, or subjected to a condition that exposes it to a lot of friction.

Model NumberPILOT LFBK-23EF-BB
Weight0.5 ounces
Body Color Dark Blue
Body Material Plastic
Clip Material Plastic
Clippable Yes
Color Set No
Diameter - Grip 10.7 mm
Diameter - Max 11.1 mm
Grip Color Dark Blue
Grip Material Rubber
Ink Characteristics Erasable
Ink Refillable Yes
Length - Extended 15.0 cm
Length - Retracted 14.5 cm
Mechanism Retractable
Pre-Installed Ink Color Blue Black
Tip Length 4.5 mm
Tip Material Metal
Tip Size 0.5 mm
Tip Type Conical

Frequently Bought Together

Pilot FriXion Ball Knock Retractable Gel Ink Pen - 0.5 mm - Blue Black - PILOT LFBK-23EF-BB
Pilot FriXion Gel Ink Pen Refill - 0.5 mm - Blue Black - PILOT LFBKRF-12EF-BB
Total Price: $6.00
This item: Pilot FriXion Ball Knock Retractable Gel Ink Pen - 0.5 mm - Blue Black - $3.80

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Customer Reviews

Great pen. Higher visibility...
September 15, 2012
Verified Purchase
Great pen. Higher visibility than I expected, but definitely less than a gel ink or ballpoint would produce. This is a great note-taking pen with no smearing upon erasure that provides a much better set of notes than a pencil ever could. I use this pen for about 5-7 hours at a time with only the occasional ink thinning and have never had a problem described by the other user about "scratching."

Depending on your writing style, this size (0.5mm) or type of ink (water-colorish) might make this pen difficult for you. The scratching requires you to let up on the amount of pressure you put on the pen given the ink is not as a thick as a regular gel pen. Maybe grab a 0.7mm if you have this problem.

Also, if you have a slanted handwriting style like I do (being left handed), the ink doesn't flow as well creating a much lighter line than if you held the pen perpendicular to the paper. I've adjusted my own writing style to work with this pen since I haven't found a better pen for note-taking.
1 person found this helpful
The pen is great, the...
January 6, 2015
Verified Purchase
The pen is great, the point is not fine enough for my preferences.
I have no idea what other...
November 10, 2012
Verified Purchase
I have no idea what other reviewers are talking about. I use this pen 24/7 in college and I love it! Ended up buying loads of refills also.
I love this pen! Writes...
September 23, 2012
Verified Purchase
I love this pen! Writes very well, has little to no smear, and erases beautifully. Comes in handy when I need to handwrite essays for some classes. I use it all the time. The placement of the clip as the trigger for retracting the pen tip is perfect and practical.
This pen comes in a dark...
February 24, 2012
This pen comes in a dark navy blue color. The grip is just a thin layer of silicon, not to be confused as a soft grip. The clip which operated the push mechanism in the pen does fell a little unstable; the clip jiggles as if it may come off. The ink is just a little light for a blue black, but it does erase well. One of the only negative things that I noticed about this pen, is that when I had to erase a large area when I was writing chinese characters on flash cards; the frixion rubber started to wear down on the back, but just a little. This worried me that the rubber might not hold out for a very long time. But overall this is one of the best erasable pens on the market.