•Unleash creativity with this set of 3D printing filament, perfect for children and young artists. Available in 22 vibrant colors, this 2.5mm diameter filament is odorless and safe to use, making it ideal for 3D pens. The non-toxic material ensures a fun and safe crafting experience, allowing kids to create their own 3D designs and models. This refill set is a great addition for any 3D printing pen, offering endless possibilities for imaginative projects.Key Features:🌈 22 vibrant colors – A wide range of colors for creative projects🔒 Safe and odorless – Non-toxic material that’s perfect for children’s use🖊️ 2.5mm diameter – Compatible with most 3D pens for easy use🌿 Environmentally friendly – Made with safe plastic for worry-free crafting🎨 Endless creative possibilities – Ideal for making 3D models, crafts, and more