[Comprehensive Set]Includes 6 pieces of 3mm empty paint markers, perfect for artistic and DIY projects. The empty paint markers tube parent design allows easy monitoring of ink levels. use our empty refillable acrylic paint markers you never run out unexpectedly. [ Materials]Crafted from PP material, these empty marker are designed to withstand regular use. The paint touch up pens fillable is made of material, which are not prone to fading or breaking. Refillable acrylic paint markers write smoothly and are . [Versatile Applications]Each refillable paint pen is suitable for filling with acrylics, oils, watercolors, inks, and more. Empty refillable markers are Ideal for use on canvas, paper, glass, wood, and other surfaces, making empty marker a versatile tool for artists and DIY enthusiasts. [Steel Ball Design] The paint touch up pens fillable features glass beads for optimal ink mixing, avoid watercolor or paint solidification.Use refillable paint touch up pen to write smoothly. [Easy to Use] Simply fill the refillable water pen with your chosen medium, the nib gently to release the ink, and start creating. The white marker pen's parent body ensures you can see the ink level, allowing for timely refills and uninterrupted creativity. Warm Tips: If you add water-based inks such as alcohol, whiteboard water, and marker ink into the pen tube, please the pen tip gently, otherwise the ink out and not flow back into the pen tube because there is a valve inside the pen tube; if you add acrylic paint ink, coating ink, or powdered ink, the powder particles need to reach the nanometer level, otherwise the ink flow out from both sides. Product name: 6pcs-3mm empty pen holder Size: Pen length: 13.5cm/5.3inch Pen tip: 0.3cm/0.12inch Weight: 47g Color: parent Material: plastic Package Contents: 6pcs x 3mm empty pen holder Only the above package content, other products are not included. Note: Light reflection and diff