The Nautical twist ballpoint is a very cool pen. The pen features a body twist to extend and retract the ink. The body of this pen features one of our custom Bahamas Seashore blanks. These are made with pink sand from North Eleuthera, Bahamas as well as real seashells and starfish. Truly creates a one of a kind pen. This pen uses a Parker style refill. A Schmidt Easy Flow 9000 is recommended.