The Dong-A P-Knock is a retractable ballpoint pen using 0.5mm blue ink. It offers a smooth writing experience and a stable grip, and its transparent body design allows you to easily check the remaining ink level. It is a standard writing instrument widely used for office or academic purposes and is great for corporate or academy promotional items through bulk purchases. As a reliable Korean-made product, it is available in individual units so you can prepare exactly the quantity you need.