Rotring Isograph Technical Drawing Pen, Replacement Nibs. 0.18 0.2 0.25 0.3 0.35 0.4 0.5mm. For Tracing, Vellum Drawing Paper - Gel Pens - AliExpress

Rotring Isograph Technical Drawing Pen, Replacement Nibs. 0.18 0.2 0.25 0.3 0.35 0.4 0.5mm. For Tracing, Vellum Drawing Paper - Gel Pens - AliExpress

Rotring Isograph Technical Drawing Pen, Replacement Nibs. 0.18 0.2 0.25 0.3 0.35 0.4 0.5mm. For Tracing, Vellum Drawing Paper - Gel Pens - AliExpress

Rotring Isograph Technical Drawing Pen, Replacement Nibs. 0.18 0.2 0.25 0.3 0.35 0.4 0.5mm. For Tracing, Vellum Drawing Paper - Gel Pens - AliExpress

Rotring Isograph Technical Drawing Pen, Replacement Nibs. 0.18 0.2 0.25 0.3 0.35 0.4 0.5mm. For Tracing, Vellum Drawing Paper - Gel Pens - AliExpress

Rotring Isograph Technical Drawing Pen, Replacement Nibs. 0.18 0.2 0.25 0.3 0.35 0.4 0.5mm. For Tracing, Vellum Drawing Paper - Gel Pens - AliExpress

Rotring Isograph Technical Drawing Pen, Replacement Nibs. 0.18 0.2 0.25 0.3 0.35 0.4 0.5mm. For Tracing, Vellum Drawing Paper - Gel Pens - AliExpress

Rotring Isograph Technical Drawing Pen, Replacement Nibs. 0.18 0.2 0.25 0.3 0.35 0.4 0.5mm. For Tracing, Vellum Drawing Paper - Gel Pens - AliExpress