Description The Magna Carta Mag 800 oversized fountain pen in green swirl resin features rhodium plated trim and stainless steel #8 sized nib with ebonite feed. Nib is available in Fine, Medium, or Broad. Pen fills via included converter, cartridge, or can be filled via eyedropper. Cap Diameter is 18.00mm, Barrel Diameter is 16.25mm, Section gripping diameter is 12.00mm and over all length is 151.60mm.