The brush with the shorter tuft is called a dagger, a longer one (also made for watercolor) is called a sword and the very long tuft but shorter handle seen above is a dagger striper. I have had the latter for decades. It's usually used by sign painters and car paint detailers for long, thin lines.
|Douglas Fir Pine Cones|
See my Instagram feed for a quick video of how I use the dagger brush for creating soft edges for snow shadows,
|Trying out a new bleed proof disposable fountain pen.|
How's it going for you?