Product description: Material: Stainless steel and plastic Color: as picture shows Package including:5 x Fountain Pen Ink Syringe Filler EASY TO USEEasy to refill, just dip the tip into an ink bottle, press the spring loaded stick, release the stick to suck the ink into the converter, and absorb the ink is no problem. more complicated. EXQUISITE CRAFTSMANSHIPThe auxiliary absorption syringe uses a vacuum spring to facilitate ink filling. The ink filler barrel is transparent for better visibility and to prevent your hands from getting ink when absorbing the ink. HIGH-QUALITY MATERIALSThese fillers fountain pen ink syringe are made of high quality stainless steel and plastic. They are not easy to rust or deform and the needle can be reused. PRACTICAL FUNCTIONCompact and lightweight for easy carrying, it is very suitable for filling or emptying ink cartridges of pens, converters and bottled inks. It can basically meet the needs of most pens equipped with an ink converter. EASY TO CLEANThe pen spring filling interface is easy to disassemble, clean and store. install ; it can be directly rinsed with water or pushed several times to absorb water, and the inner wall and needle can be cleaned to avoid ink color confusion.