Rich Quantity: You receive 20pcs refillable paint pens with a tip of 15mm/0.59 inches, sufficient quantity to meet your daily use and diverse painting needs. It bring more convenience to your painting experience. EASY TO USE: This empty paint marker pen is easy to fill with ink and paint, just remove the tip area, fill with paint or ink, then screw the tip area to start drawing, for beginners or experienced people. Material: The empty paint pens is made of PP material, and the pen tip is made of polyester and acrylic material,with steel bead inside,reliable and sturdy, which provide you with a smooth writing. Design: This fillable paint pens is transparent, which is helpful to control the amount of ink and fill the ink in time.The steel ball in the pen can mix the ink well, which can prevent the watercolor or paint from solidifying, and letting you enjoy smoother writing. Wide Application: The empty paint pens is suitable for filling different paints or inks, you can fill empty tubes with different colors you like, such as,art acrylics, watercolors,inks, dyes and more, suitable for home, school, painting class and other, practical tool for students and painters. Color: Transparent Material: plastic Package Contents: 20 x Empty Acrylic Markers 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.