For handwriting that impresses, the Pentel replacement cartridge makes your office more consumption-conscious. The genuine supporter keeps your roller reliably operational and is very easy to replace. Its composition allows it to work efficiently, preventing unnecessary interruptions from constant replacements. It’s best to always have a small stock of these on hand. With the use of gel as ink, the writing dries quickly and doesn’t smudge easily. At the tip of the pen is a durable ball that applies the ink evenly to the paper. This cartridge comes in black.