The ink is acid-free

2mm round soft brush tip

We also sell MTN Water Based Markers Fine 5 mm individually

Additional Colours

uni ball eye ultra micro rollerball pen 0 38 mm Painting on stones The ink is acid-freeUni Ball Eye Ultra Micro Rollerball Pen 0. 38 mm rollerball pen that makes handwriting bold and expressive. Its smooth flowing rollerball nib delivers a consistent line without skipping, while the fade resistant uni Super Ink ensures your writing stays clear and legible for a long time. The pen uses water based ink that is xylene free and made from 70% recycled plastic. An ink window lets you see how much ink is left. Available in three colors, its