Durable Material: This ruling pens feature a metal nib with a green plastic handle, applied for drawing fine precise lines with paint, ink or masking fluid, the glue and residue eraser is made of rubber, which is safe and durable to use, they are elastic and won't easy to break after pressing, non toxic. Easy to Use: These masking fluid pens easily adjust to a variety of line widths and renders them precisely, each adhesive remove eraser can help you to remove most adhesive residue conveniently. Function: The adhesive remove eraser can remove adhesives and residues from paper, plastic and more surface, perfect for school, home, office using, help you to clean watercolor, sketch, glass, plastic, leather, boards and so on; Ruling pens are a traditionally designed instrument that down lines in ink, paint or any liquid medium that has the viscosity to flow. Package Include: You will receive 4 pieces glue residue eraser and 1 piece art ruling pen, 5 pieces in total, enough for you to use and meet your various cleaning needs. Material:metal+rubber colour:Yellow Package Contents: 4 x glue residue eraser 1 x art ruling pen 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.