**Feature** Genuine Noodlers Branded Quality Stainless Steel Flex Nib Fountain Pen Green Grain Body & Cap Piston Filling System for Bottled Ink Windowed Ink Compartment - Celluloid Fountain Pen From Noodler's Ink - A flexible nib fountain pen with a twist-fill piston mechanism. Writes from thin the thick lines based on pressure and speed of writing. Made from a celluloid derivative， these pens should never be cleaned with alcohols.