The Ink is the Karas Pen Co. take on a full size fountain pen. The clip on the Ink is solid spring stainless and is anchored to the cap with two stainless socket head screws. The #6 nibs are stainless steel units manufactured by Peter Bock in Germany. Also included with each pen is a Schmidt K5 cartridge converter and 5 black Monteverde ink cartridges. Each pen is designed and machined in the USA.