Noodler's Ink Standard Flex Fountain Pen with Twist-Fill Piston, Stainless Steel Nib, Jade (17010) Genuine Noodlers Branded Quality Stainless Steel Flex Nib Fountain Pen Jade Green/White Grain Body & Cap Piston Filling System for Bottled Ink Windowed Ink Compartment Celluloid Fountain Pen