Noodler's inks are known for their affordability, wide range of colors, and good performance on more absorbent papers that are not normally fountain pen friendly. They are also known for their distinctive label art, featuring unique drawings that often reflect their creator's strongly held political and economic ideals. Dedicated to keeping prices as low as possible, Noodler's uses simple bottles and packaging, with boxes made of recycled paper. All Noodler's inks are 100% made in the USA.This ink is part of Noodler's Eel series of lubricated inks. It is specially formulated to lubricate the pistons of piston-filled fountain pens and converters, helping them to operate more smoothly and easily.