Size information: each rubber residue eraser is . 2.8 x 2 x 0.32 inch/ 7 x 5 x 0.8 cm and art ruling pen is . 4.7 inch/ 12 cm, 4.9 inch/ 12.5 cm, 5.25 inch/ 13.3 cm in length, different sizes to meet your different demands Functional tools: the adhesive remove eraser can remove adhesives and residues from paper, plastic and more surfaces, practical for school, home and office using, help you to clean watercolor, sketch, glass, plastic, leather, boards and so on; Ruling are a traditionally designed instrument that down lines in ink, paint or any liquid medium that has the viscosity to flow Durable material: the artist masking fluid pen features a hardened plated steel nib with a green plastic handle, which can be applied to draw lines with paint, ink or masking fluid; The residue eraser is made of rubber, safe and durable to use, they are elastic and 't easy to after pressing Convenient to use: these ruling ink can adjust the width of lines; Adhesive residue erasers can help you remove most of the adhesive residue Colour: yellow Material: metal Package Contents: 3 x Glue residue erasers 3 x Art ruling Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.