Noodler's Ahab - my first flex pen. But I'm not seeing the “flex” effect I was hoping for. Ink is OS Emerson (and I used gloves this time to fill it...) :
Noodler's Ahab Flex Fountain Pen - Lapis Inferno - The Goulet Pen Company
REVIEW: NOODLERS AHAB FLEX NIB FOUNTAIN PEN | The Pencilcase Blog | Fountain pen, Pencil, Ink and Paper reviews