Nib material: Iridium Specifications: 13.5 cm * 1.1 cm Ink supply system: spiral ink absorber, ink sac Shell material: metal Nib: Straight-tip pen , Art-tip pen Pen body color: matte black, Electroplated gold,Jazz Silver,Lilac purple Applicable gift occasions: employee benefits, anniversary celebration, award commemoration, trade fairs, advertising promotions, festivals, weddings, public relations planning, housewarming, birthdays, business gifts Process: Electroplated gold, matte wrinkles Shop promotions, buy four pens, get one different pen free Attention:Comfortable to hold and smooth writing. Gifts for your family, friends, colleagues.Due to manual measurement, please allow an error of 0-1cm. The color of the items shown in the photo may be slightly different on the computer monitor because the monitor calibration method is different.welcome for shopping!