Mitsubishi Pencil Uni Y. ＵＭ－１５１アジアグリーンブラック Y.UM151A.7 4902778684702（10セット）

A long-selling gel ink ballpoint pen since its first release in 1994. You can enjoy coloring with a wide variety of colors. Since it is a water-resistant pigment ink, it is also resistant to water.