... the lights, it glows green in dark! It's perfect for haunted houses, radioactive bunnies, or ceiling star constellationsCharacteristic 1.Filament ... accuracy ±0.05mm with laser monitor and interlock device, smooth surface, no bumps, independent R&D, folded no break, high hardness, high ... since 2009. Esun glow-in-dark PVA PLA ABS filament welding rod for 3D printer