Metal Ball Pen

A pen is a writing instrument used to apply ink or other fluid to a surface, typically paper. It typically consists of a metal or plastic body with a tip that holds a small amount of ink, and a mechanism for transferring the ink to the writing surface. There are many types of pens, including ballpoint pens, rollerball pens, and fountain pens, each with its own unique characteristics and features. Pens are used for a variety of purposes, including writing, drawing, and signing documents. They are a common tool found in many households, offices, and schools.