Pilot Hi-Tec-C Coleto Multi Pen Ink Cartridge - 0.3 mm - Black

this WILL work with the dr. grip 4+1 series. all you have to do is take the refill out of your dr grip 4+1 then take the top off of the coleto refill and make sure both are the same height (if the are not, cut with scissors to adjust) then put the coleto refill in the spot of the dr. grip.

I am a big fan of these ink cartridges. They write smoothly and consistently. The 0.3 point allows me to write very small but it still is clean and easy to read. The 2 color pens work great for me since they are comfortable in my small hands and I can still have one black ink for most of the time, and a bright color for writing side notes.

Nope 0.3 mm does not work with Dr. Grip 4+1. I don't know about the others though.

Does this work with the Dr. Pilot 4+1 Multi Pen series? Please reply! Thanks!