Xezo Diamond Cut Gel Ink Rollerball Pen (Incognito Zinc R) Weight balanced metallic zinc luxury rollerball pen with Medium nib; Designed to reduce friciton at the tip of this limited and serialized pen Solid brass body. Solid brass fittings are .999 platinum-plated and hallmarked Color hues change slightly depending on viewing angle Original Medium point rollerball is German-made with ruby ball; Additional refills available with Xezo, and is selectively interchangeable with a variety of refills Includes: gift box, (1) extra Xezo Speedmaster roller pen refill, certificate and 3-year warranty card; Pen diameter 12 mm, length posted 156 mm/capped 138 mm; Weight: 51 g/1.8 oz.