Lamy's flagship fountain pen is the 2000 made of a combination of black fibreglass and brushed stainless steel known as Makrolon. It is piston filled and as such can only be used with an ink bottle and not with ink cartridges. The Lamy 2000 is so revered that it is on permanent display at the Museum of Modern Art and has won countless design awards. 14kt gold, platinum-coated nib.
Please note the Lamy 2000 Fountain Nib writes 1-2 sizes broader than a conventional size nib. So, if you are after a Medium Nib, order Fine, or preferably Extra Fine. If you want Broad, order a Medium. This particular nib drops a lot more ink than other nibs.