Ruling Pen for Masking Fluid, Perfect Fine Line Drawing, Technical Cartography and Calligraphy, Suitable Use with Drawing Ink

【Package Contains】Includes 3pcs glue residue erasers and 3pcs art ruling pens in 3 sizes, 6 pieces in total, enough quantity to meet your various needs. 【Material】This masking fluid pen features an iron nib, which can be applied to draw line with paint, ink, or masking fluid; The residue eraser is made of rubber, safety and durable to use. 【Easy to Use】These ruling ink pens can easily adjust the width of various lines; the residue erasers can help you easily remove most of the residue. 【Application】This ruling pen designed for fine line drawing, technical drawing, cartography, and calligraphy. It can also be used for making fine line and borders. 【Size】Each rubber residue eraser is approx. 5cmx7cm/1.97inchx2.76inch, and art ruling pen approx. 12cm/4.7inch, 12.5cm/4.9inch, 13cm/5.12inch in length, different sizes to meet your different demands.