Pastel Brush pen
The holy grail of all brush Pens- Tombow AB-T!
These Dual Tipped markers have a broad flexible brush nib pens ideal for hand-lettering and calligraphy; as well as a fine tipped nib for outlining and details too.
This listing is for one pen (choose your colour before checkouy) but you'll probably want a couple after you've tried them out! ;)