you receive 50 empty refillable markers, each with a 3ml plastic dropper and a 6mm tipped empty paint pen; The quantity is sufficient to meet your daily use and replacement needs; This thoughtful combination brings more convenience to your painting experience the empty marker is easy to operate and use; The white refillable paint pen it convenient to know the amount needed and fill the color; Just move the tip area of the pen away, insert the steel tip into the pen tube, fill it with paint or ink, and then screw it back onto the tip to writing; Be careful not to remove the feed if you need to add whiteboard water or ink to a refillable marker pen, please gently the tip of the pen; Otherwise, the ink out of the pen tube due to the valve and not back; When you want to add acrylic ink, paint ink and powder ink, these powder particles need to meet the nanometer standard the empty paint pen refillable is mainly made of material, with steel balls inside, providing you with smooth writing and allowing you to use it with peace of mind; The steel balls prevent watercolor or paint from solidifying; Please note to put the steel balls into the pen for a better user experience the refillable ink pen is suitable for filling different paints or inks; You can fill the empty tube with your favorite colors, including acrylic, oil paint, watercolor, ink, etc. It is a practical tool for families, schools, painting classes, etc., for students and painters Easy to paint: These empty paint pens can be easily filled with ink and paint without the need for any other complex usage steps, making them ideal for both beginners and experienced users. Multi functional touch up pen: Our reliable acrylic marker pen set is suitable for various art projects, graffiti and handicrafts, it can be easily filled with acrylic, oil paintings, watercolors or the ink of . Size: 0.24 inch/ 6 mm Specifications: A: round head Mate