For handwriting that impresses, the Pentel replacement cartridge makes your office more cost-effective. This reliable support keeps your roller functioning smoothly and is easy to replace. Its composition allows for efficient performance, minimizing unnecessary interruptions from constant replacements. It's best to always have a small supply on hand. With gel ink, the writing dries quickly and doesn't smudge easily. At the tip of the pen is a durable ball that distributes the ink evenly onto the paper. This cartridge is available in black.