Made of high-quality stainless steel and plastic materials. This simple plunger-driven ink container allows for easy refilling and neat, convenient use of liquid ink with your fountain pen. The liquid ink flows smoothly, producing a solid, consistent line that enhances the sophisticated experience of fountain pen writing. Features: - Color: Red, Silver Black, Silver - Material: Stainless steel, plastic - Size: 12.00 x 0.70 x 0.70 cm / 4.72 x 0.28 x 0.28 in - Suitable for various 3.4 mm and 2.6 mm caliber fountain pens with European standard - Constructed from sturdy and durable materials for long-lasting use - Simple, practical design that is easy to install and use - Resistant to deformation and breakage - Designed to meet ergonomic standards for comfortable handling - High-quality workmanship and precise details ensure reliability and durability Packing list: 9 x Pen Ink Refills