I've always thought the point of writing in ink was permanence--you can't erase whatever witty (or less than so) sentence is on the paper claiming to be your handwriting. But there are times when you do want to correct a mistake or re-write a thought that's on paper, so erasable ink pens such as the Uni-ball Signo Erasable Gel were created.
Using an erasable gel ink pen is a conscious act, one that pretty much says that you know you're going to erase something. You can't hide from that statement about yourself, so why not wear it proudly and with some style? If that's more to your taste, the Uni-ball Signo Erasable Gel's "little black pen" will be perfect for you.
This is an 0.8mm tip and I f0und it to be the right width, but JetPens has them in 0.5mm and in an assortment of colors for a very low price of $1.50. The black ink on this pen is quite different, it has an almost oily sheen to it that makes it more of a smokey black than a true black. That is probably from whatever is used to make the ink erasable, and may not be to some people's liking. I thought it was unusual and appealing.
The eraser is on the end of the cap, so once you post it on the pen you're all set. It does its job quite well, although it does leave a lot of rubber crumblies on the page. You might want to invest in a different, stand alone eraser if that's of importance to you.
One final test was how well the pen overwrote the erased space. Here is the deal-breaker on erasables, as some are not very good at that particular task. And the Uni-ball Signo Erasable Gel did quite well at this particular job. Not perfect, mind you, as there was a bit of skipping and invisible marks where writing should have been, but quite well.
If you're interested in erasable gel ink pens, or you need to round out a JetPens free shipping order, take a look at the Uni-ball Signo Erasable Gel ink pen.