Made of high class stainless steel, plastic material. A simple plunger driven ink container refills easily to use liquid ink neatly and conveniently with your fountain pen. Liquid ink is smooth flowing, leaves a solid, confident line, and adds to the sophisticated experience of fountain pen use.Features-Color: Red, Silver Black, Silver-Material: Stainless steel, plastic-Size: 12.00X0.70X0.70cm or 4.72X0.28X0.28in-Note: Suitable for various kinds of 3.4 mm and 2.6 mm caliber ink pens with European standard.-Made of sturdy and durable materials, these ink absorbers can withstand continuous use.-They feature a simple design, but they are very practical to use and brings you a lot of convenience.-They are not easy to deform and break, convenient and durable for long time use.-The product design conforms to the ergonomic design and are easy to install and use.-Excellent workmanship and fine details ensure their popularity and durability.Packing list: 9 x Pen Ink