I haven't bought any other type of pen since 2012!

I am so happy Tokyo Pen Shop exists - I bought some pens in 2012 in Korea, and I HAD to find some refills when I came back to the States. Found this...

Tombow Mono Knock



  • Description
  • Reviews

The Tombow Mono Knock is a knock-style eraser in a pen style body. We think it is a fantastic addition to the Tombow Mono line.

  • Available in green, blue, and pink
  • Knock-style retractable eraser
  • Refillable
  • Eraser diameter 3.8mm


5 of 5 Stars
Hands down best eraser I own! I have two so that I can keep one in my pencil cup at my desk and the other in my pen bag. My daughter also loves to use this for her artwork, as they have a very fine point, and she can use it to get into little spaces in her drawings to erase things. They are also easy to refill.