Noodler's Ink Standard Flex Fountain Pen with Twist-Fill Piston, Stainless Steel Nib, Cardinal Darkness (17060) Genuine Noodlers Branded Quality Stainless Steel Flex Nib Fountain Pen Cardinals Darkness - Red/Black Grain Body & Cap Piston Filling System for Bottled Ink Windowed Ink Compartment - Celluloid Fountain Pen