Refill: compatible with uni-ball UMR-10 cartridges

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

consistent line that results fits cleanly inside small spaces like 5 mm dot-grid squares without blurring across the lines

Paris and Mexico City

supports rapid layering

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