The Diplomat Cobra Black rollerball pen has a deep guilloche scale pattern across its body, with beveled end pieces and polished PVD trim. The uniform dark finish emphasizes the silhouette and surface texture, with subtle changes in reflection defining the grooves, edges, and trim. The cap closes with a magnetic closure.

As a rollerball, this pen takes a standard international capped rollerball refill. Diplomat has produced writing instruments in Germany since 1922, and this pen is made in Germany at Diplomat's production site in Cunewalde, Saxony. It carries a five-year manufacturer warranty; for service in the United States, contact the Yafa Brands Repair Department in Canoga Park, California.