Description The Edison Comet fountain pen in Cobalt Magma features a blue and red flecked acrylic resin barrel and cap, with a contrasting translucent cap finial, and has silver-plated trim and a #6 steel nib engraved with the Edison logo. Included with the pen is a standard converter for use with bottled ink. The design uses the cap finial as the largest part of this model, tapering from this point all the way to the end of the barrel. The finial has been made from a translucent material that represents a comet. The rest of the pen tapers to the end of the barrel, representing the comet’s tail. The Edison Comet will allow the cap to post onto the barrel of the pen while you are writing. The nib options for the pen range from steel EF through Broad, plus 1.1mm and 1.5mm stub sizes, or upgrades to an 18kt nib are available. Please Note: Some 18kt nibs are special order and will take an additional 7-10 days for delivery.