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.

These refills are my first experience with the vaunted Hi-Tec-C. I'm concerned that these may not be writing as well as the original Hi-Tec-C pen (I've read a lot of glowing reviews). I know that is the case with the Slicci 0.3mm refills, that write no where near as well as the original barrel.

Anyway, on to performance. The ink flow isn't the best. The line gives out/sputters a lot while writing. I found myself having to slow down a little to get a good flow. Even then, these tips are really scratchy.

When the refill does manage to work, it puts down a nice, thin line (thinner than the 0.3 Slicci). The colors are really cool.

Bottom Line: These refills can't keep up with my writing speed. I need to try the original HTC pen and a 0.4 refill, to see if those will be smoother and more consistent. Until then, it's all about the .28 Signo DX.
: 3

90g Clairefontaine Paper
Coleto 4 Color Body

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!