Used these to replace the nib in my molotow dripstick!
The high flow nib used to come out with the cap when I'd unscrew it to write! That sucked!
Since I've been using these now the nib never pops out! Plus I can write on those green boards as much as I want now!
If you have an 860DS Molotow replace the stock nibs with these for hassle free writing!