Kaweco Fountain Pens. Perkeo series. SKU: 10001315. The Kaweco Perkeo fountain showcases a vibrant black and pink color scheme, adding a playful yet stylish touch. It features a snap-on cap for convenience and a triangular ergonomic grip section designed to provide a comfortable writing experience. The pen comes with blue ink and is made from durable plastic, ensuring longevity and lightweight use, weighing only 0.43 oz (12 grams). The medium nib, finished in dark blue steel, offers precise and smooth writing, making it an excellent choice for both everyday use and special occasions. The Kaweco Perkeo fountain pen beautifully combines functionality with a modern aesthetic. Made in Germany.