Penbbs 268 Transparent Negative pressure Fountain Pen Fine Nib F/0.5mm Writing Specifications: Type: Fountain Pen Color: Full Transparent Cap : Screw Type Ink: Vacuum Filling Nib:  F  ( steel nibs) Material: Plastic Capped Length(Approx): 140mm/5.5” Pen Diameter(Approx): 12mm/0.2” (1cm=10mm=0.39”) Package include: 1x Fountain Pen Features: -100% brand new and high quality. -Excellent transparent plastic material, the ink slosh around in the barrel, and the transparent that makes this pen crystal clear. -High quality, fashion & cute design, smoothly writing, very beautiful. -Ideal for travel, sports and office, also a great gift for friend, family and Colleague. -Three Filling system --Eye dropper filling it up is very easy. You can easily fill it right away with your favorite color bottled ink. Notice:  -Please allow slight deviation of measurement due to manual measurement. -Due to different monitors and different light, the picture may not reflect the actual color of the item. -Please consider the actual sizes shown in the listing as the pictures are generally enlarged to show detail.