Quality Material Selection: the pen body of this sort of touch up paint pen is made of plastic material, and the pen tip is made of polyester and acrylic material, providing you with a smooth writing, so you can use our paint pen with confidence Diversified Stuffed Contents: our empty paint pens are well favored by children and painting amateurs, feasible to be stuffed with some ordinary ink, water, oil paint, liquid chalk and other watercolor, bringing your a splash of color; Be careful not to use very thick liquid filling, which may cause the nib not to flow out or unevenly Important Design of Steel Beads: each watercolour fluid pen has a steel ball inside, as a way of avoiding the watercolor or paint solidifying, and making the water color writing smoother; Please remember to put the ball into the pen, to get a standard using experience Ingenious and Innovative Manufacture: the white touch up pen has a transparent empty pen tube, convenient to see it through, master the amount and add ink in time; Please note that you should put the steel ball into the pen tube first, then inject with ink, and finally twist the pen head part tightly to write; Be careful not to pull out the pen refill, it may affect the use Versatile Performances: our touch up pen can be applied for a wide range, and you can fill it with colored ink or mix your preferred colors, and then start your creations on canvas, clothing, shoes, glass, mirrors or paper, an ideal drawing item for painting or DIY lovers.<br><br>size: (oblique head 6.0mm/round head 3.0mm) Material:plastic colour: transparent white<br><br>Package Contents: 12 x Empty paint markers<br><br>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.