just pull out the old one and push the new one in

Technical pencil with a 4-mm metal nib that enables precise drawing and less lead breakage

Trainpad with blanks from subways of New York

The mask has integrated filters of activated carbon which can't be replaced

These refills come in smaller sizes too: On The Run OTR

uni pin fine line brush pen Colors:Dark Grey just pull out the oldThe Uni Pin Fine Line Brush Pen gives artists, illustrators, and designers a tool that combines precision with expression. Filled with uni balls fade proof, water resistant Super Ink, it delivers bold, pigment rich lines that hold up beautifully, even when used alongside watercolours. That means you can layer washes over your drawings without fear of smudging. What sets this pen apart is its flexible brush tip. It responds effortlessly to pressure,