Pocket Refillable Brush Pen Medium by Pentel

This brush pen from Japan is great for taking on the go and is refillable to boot. Get a wide range of line widths with the medium fiber tip brush.

LifeMaster Pentel Pocket Brush Pen for Calligraphy With 2 Ink Cartridges Medium Gregular Script Good Quality Writing Supplies

Pentel - Brush Pen XFL2L - Medium

Hacking the Pentel Pocketbrush

Pentel Refill Pocket Brush Pen, Black

Pentel Pocket Fude Brush Pen Refills (FP10-A), Black Ink, 3 Pack/total 12 Refills (Japan Import)

Pentel Refill Pocket Brush Pen, Black

Pocket Brush Pen and Ink Refills

Pentel Arts Limited Edition Pocket Brush – Pentel of America, Ltd.

Japan Pentel Arts Pocket Scientific Brush Pen,Fountain Refillable Calligraphy Brushes Includes 2 Black Ink Refills GFKP3 - AliExpress