A roller refill with a metal body typically features a durable and sleek construction, often made from stainless steel, aluminum, or other sturdy metals. The metal body provides a premium feel, ensuring longevity and resistance to wear and tear. These refills usually contain a high-quality ink reservoir, which flows smoothly through a ballpoint mechanism for precise and consistent writing.

The metal body not only enhances the aesthetic appeal of the refill but also adds weight, contributing to a more comfortable writing experience. The refill is often designed to fit standard rollerball pens, offering a reliable and long-lasting writing tool for both professionals and everyday users. It may also have a matte or polished finish, with some models featuring engraving or branding for added customization.

In addition to its durability and aesthetics, a metal body roller refill may offer a variety of ink types, including gel, liquid, or hybrid ink, each providing different writing experiences. Gel ink, for example, tends to flow smoothly, providing rich, vibrant color with little to no smudging. Liquid ink refills often provide a fine, consistent line, perfect for precision tasks like note-taking or journaling.

The metal body may also have an ergonomic design to ensure a comfortable grip, especially for extended writing sessions. Some rollerball refills feature a retractable mechanism or a twist design for added convenience and to protect the ink tip from damage when not in use.