Staedtler Lumocolor Duo Twin Type 348 WP4 Oil-Based Pens, 0.6mm & 1.5mm, 4-Color Set,

[The pen tip won't dry out, allowing you to concentrate on your work] For up to two days, use dry-safe ink that won't dry out the pen tip. 【Convenient Twin Type】With twin tip sizes of 0.6mm and 1.5mm, there's no need to carry multiple pens. [Can be on various materials] Can write vividly on a variety of materials including glass, porcelain, metal, and film. 【High-Performance Oil-Based Pen】Easy to use with excellent ink adhesion and quick-drying properties, and a strong pen tip. [Convenient Case Included] Comes with a dedicated case that is convenient for carrying and can also be as a pen stand.