Cross

A.T. Cross is an American maker of fine pens based in Rhode Island. Virtually all of their pens take proprietary refills. Their multifunction pens take a standard D1 refill. Otherwise, the only refill that is close to a standard is their C1 ballpoint, which is slightly shorter than the official ISO standard length. Jaymo, Monteverde, and other refill makers have refills that are designed to fit Cross pens.

Manufacturer’s Website: A.T. Cross Luxury Pens