A ballpoint pen or biro, is a cutting edge sort of pen for composing. It utilizes oil-based ink of high thickness. The i
Qopqoq, bochka va siyoh trubkasi plastikdan, sharik va uchi esa metallardan qilingan. Qalamning bochkasi polistiroldan,
The cap, barrel, and ink tube are made of plastic, while the ballpoint and tip are made of metals. The barrel of the pen