Perfect giveways for students studying chemestry. Customize your periodic table chart on pull out flag now! Pen barrel have variety of choice, blue, red,green,yellow,purple,orange,white, black, or even opaque white. The flag max size is 168*68mm, which mean your cutomized artwork shall be within that size. And if you just want standard, we also have a nice look periodic table chart as standard. We can also put your company logo on the flag above the periodic table of elements, thus your company name will show up eveytime students open the periodic table flag pen.