TWSBI Kai Fountain Pen ecoyellow Simply unscrew the end cap

Simply unscrew the end cap

Acrylic cap

Also designed with a ink shut off valve for easy carry and no mess on airplanes

Comes in Blue

TWSBI Kai Fountain Pen ecoyellow Simply unscrew the end capPiston Filler Type fountain pen. Simply twist the end knob open and closed to fill the pen with ink. Acrylic cap, grip, body, end cap. RoseGold nib, clip, rings Limited Run, Special Edition Comes in EF, F, M, B nib sizes A quick no brainer guide in choosing nib sizes in an overly complicated fountain pen world: If you write small, go with an EF For the normal writer, F is the most popular If you tend to lean on a bigger font, M will be perfect B is