environmentally friendly materials, safe and harmless. The design of the pen head is smooth, and writing can be smooth without lag. These refillable drawing pens are suitable for painters, designers, art students, DIY enthusiasts, architects, etc. They are a good helper in the process and can be widely used on canvas, clothing, shoes, glass, mirrors, paper, backpacks, walls, ceiling. How to use: The refillable paint pen is easy to operate and use, the white tube makes it easy to know the amount, easy to fill with color, just remove the tip area of the pen and put the steel ball into the pen to fill the tube with paint or ink, then put the tip Turn it back to start writing; be careful not to pull out the pen core, which affect the use. The actual product may have slight color differences or differences, which does not affect use. Colour:Transparent white Material:plastic Package Contents: 6 x round head paint pens 6 x tilted head paint pens 4 x flat head paint pens 3 x plastic dropper Only the above package content, other products are not included. Note: Light reflection 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.