Refill: compatible with uni-ball UMR-10 cartridges

This brush has a round shaped brush-tip size 4 (approx

A high-flow 10mm exchange applicator delivered in pack of two for:

7 mm lead with the same internal rotation mechanism as the rest of the line — a pressure-sensitive clutch that turns the lead slightly with every stroke

The tip swaps out when it wears down from heavy use

tombow watercolor paper 24x32 cm 300g Nino Refill: compatible with uni-ball UMR-10This is a 300 gsm cotton blend paper built specifically to handle wet media without warping or buckling the way thinner paper does once water hits it a real concern with watercolor washes or saturated brush pen work, where standard paper tends to ripple as it dries. The surface is hot pressed smooth rather than textured, so brush tips glide across it without fraying, and colors blend cleanly into each other while the page is still wet. The paper is