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:Black, Red-Material:Plastic, Stainless Steel-Size:7.50X0.80X0.80cm/2.95X0.31X0.31in-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. Made of good stainless steel, plastic material, the ink converters are durable for long-lasting use. These practical pen ink converters are convenient and easy to install and remove. These ink absorbers are lightweight and compact, which can be carried easily. Share with your friends and family as they are wonderful ink converters. These multipurpose ink converters are suitable for most of the pens on the market.