Description The Pilot Parallel calligraphy fountain pen with a 3.8mm nib has a silver plastic tapered barrel and bright green cap, with a nib that consists of a unique parallel plate structure which achieves more beautiful and sharper handwriting than existing calligraphy pens. Ink cartridges can be switched in the pen to create gradually changing color lines and mixed colors. Each plastic boxed set contains one Pilot Parallel pen, one black and one red ink cartridge, a blue bulb syringe for flushing and a nib cleaner. For use with bottled ink, the Pilot CON-40 converter works best. Additional Pilot ink cartridges are also available. We offer Free Shipping on all orders over $59 for US customers, and for orders over $250 for our Canadian customers. Diameter - Body 11.3mm .4" Diameter - Grip Section 9.8mm .39" Length - Body 159mm 6.3" Length - Cap 60mm 2.4" Length - Pen Closed 168mm 6.6" Length - Pen Posted Weight - Body Only 6g .2oz Weight - Cap Only 4g .1oz Weight - Entire Pen 10g .35oz For our purposes: Body Diameter is measured at the widest position of the barrel. Grip Section Diameter is measured at the spot where most pen users hold their pen. Body Length is from the end of the barrel to the tip of the nib. Body Weight and Overall Pen Weight includes a converter, if one comes with the pen.