Diameter: 13 mm. Posted length: 174 mm / 6.85 in. Capped length: 145 mm / 5.71 in. Weight: 48 g / 1.7 oz. Every Xezo writing instrument is guaranteed against all defects in workmanship and parts for 3 years from date of sale Fine/Extra fine nib fountain pen (0.3 mm line width). Screw cap with screw posting. Chrome-plated brass fittings. Oceanic mother of pearl and Paua abalone have hardness of 4.5 on the Mohs scale (as hard as steel) This serialized special edition model was created to celebrate the 20th anniversary of the Xezo Maestro All Mother of Pearl pen series. Only 223 pieces exist worldwide Nacre shifts colors in the light and can range in tones from white, pink, purple, green, blue, turquoise, yellow and gray. Natural distinctions in color and texture may occur, helping make your pen truly one of a kind Set comes with the pen, gift box, 4 ink cartridges, piston converter, certificate, and a 3-year warranty card. Xezo ink cartridges are available for purchase