Selected high-quality environmentally friendly materials, safe and harmless. The pen head is smooth and the writing can be smooth without lag. Refillable drawing pens are suitable for painters, designers, art students, DIY enthusiasts, architects, etc. They are a good helper in the creative process and can be widely used on canvas, clothes, shoes, glass, mirrors, paper, backpacks, walls, ceilings. How to use: The refillable paint pen is easy to use and operate, the white tube allows you to easily know the quantity, easy to fill with color, just pull out the pen tip and put the steel ball into the pen to fill the tube with paint or ink, then put the tip in. Turn it over to start writing; Please be careful not to remove the pen core, which will affect the use. The actual product may have slight differences or color differences, which does not affect the use. Color: Transparent white Material: plastic Package Contents: 6 x Round Head Paint Pens 6 x Slant Head Paint Pens 4 x Flat Head