Brand name : Duke Length : 140mm Diameter :15mm Nib : Germany Iridium M nib and Calligraphy Nib Converter ：Screw typeInk cartridge : International standard Cap : Push-TypePen Weight : 35GThis Pen set includes : 1 x Fountain Pen ， 1 x Calligraphy Pen Nib Part and 1 x Animal double leather pen case