Many Lamy fountain pen models share the same type of feed and nib. Alternatively, an ink nib or attachment with a technical pen may be used. They have a brush nib, a chisel nib, and a circular barrel. The actual drawing accuracy is restricted to pen's nib size. The size of the nib or pen tip ranges from to . A note was found inside a fountain pen marked "BB" (for a "double broad" nib). These are only available in black, with a brush nib. Those were the iridium-tipped gold nib, hard rubber, and free-flowing ink. Ink was transferred through a further capillary tube to the nib. They come with a chisel nib and a bullet nib on each side. First, thickness of the nib metal changes flex. First, the thickness of the nib metal changes flex. It is described as having an unusually sharp black nib. A metal plate supports a squat neodymium-iron-boron (NIB) high-flux magnet.