MUST-HAVE FOR ANY 3D PEN OWNER! If you’re an avid user of a 3D pen, one thing is for sure: you’re going to need refills so your creative genius doesn’t get interrupted. Do that by keeping these 3D pen filament refills handy at all times. They come in FOURTEEN vibrant colors, including four glow-in-the-dark colors. Works with ALL 3D pens that use 1.75mm thickness filament inserts (so make sure to check beforehand to see if your 3D pen is compatible with these refills). Makes the perfect gift for a friend, child, grandchild, or even to yourself. Share the 3D printing love! Best of all, you’re backed by our 100% Satisfaction and Money Back Guarantee! Either you love this product, or we’ll return every penny. It’s just that simple. SCROLL UP NOW AND CLICK “ADD TO CART” TO KEEP CREATING WITH THESE 3D PEN REFILLS!