The ink is quick-drying

built around a more refined graphite formula than a standard HB pencil — finer and more compressed

Available in 9 different standard colors

wide enough to cover large background panels or window space quickly

uni pro mechanical pencil m3 552 0 3 mm Goog The ink is quick-dryingThe uni Pro M3 552 carries a 0. 3 mm lead, the thinnest size used for genuinely fine technical work architectural detail, cartography, or any layout where a slightly thicker line would blur small marks together. The barrel sits low in the hand thanks to a knurled steel grip section positioned to reduce fatigue over long drafting sessions, and a fixed 4. 0 mm steel needle sleeve keeps the lead protected and visible when tracking along a ruler, stencil,