Premium Argentium Silver Fountain Pen - Warm ToneWarm Tone Warm Tone from Silverburlpens is a handcrafted pen made from material created by the Carolina Pen Co. It features a polished steel Jowo nib size 6 and comes with a Schmidt K5 ink converter. Other nib sizes are available upon request. The pen measures approximately 145m m long including the cap, 135m m from nib to body end, and has a body diameter of 15m m with a 14m m thread. The cap diameter is 16m m. The silver used in this pen is