[Comprehensive Set]Includes 6 pieces of 3mm empty paint markers, perfect for various artistic and DIY projects. The empty paint markers tube transparent design allows easy monitoring of ink levels. use our empty refillable acrylic paint markers ensure you never run out unexpectedly. [High-Quality Materials]Crafted from durable PP material, these empty marker are designed to withstand regular use. The paint touch up pens fillable is made of high-quality material, which are not prone to fading or breaking. Refillable acrylic paint markers write smoothly and are durable. [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, press the nib gently to release the ink, and start creating. The white marker pen's transparent 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 press the pen tip gently, otherwise the ink will spray out and will 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 will 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 W