About this item: ①【Upgraded PLA Rainbow 3D Printer Filament】-SUNLU PLA Rainbow 3d printer filament old Version changes every 15-18 meters, New SUNLU PLA Rainbow filament changes every 8 meters. Color changes faster and more color variations can be seen in smaller items. Please note: First color is random. ②【High Quality & Strong Compatibility】 -1.75mm Diameter, Multicolor filaments are very suitable for Christmas and Halloween decorations, and are also very suitable for gift giving.Giving Smooth, Pearly and Unique Touch, Perfectly Compatible with Most of the FDM 3D Printers and 3D Pens in Market, No bubble, No Jamming, No Warping, Easy to Print. ③【Recommend Settings】 -SUNLU PLA Rainbow filament recommended nozzle temperature: 200 - 210°C, Heated Bed Temp: 50°C - 60°C, Printing speed: 40-60MM/s. Please insert the PLA filament into the side holes after use to avoid tangles. ④【Vacuum Packed】-SUNLU 3D printer filaments are all vacuum sealed and come with a desiccant pack. Vacuum packing, dustproof and protect the filament dry, avoid absorbing moisture during transportation. Guaranteed to deliver the best printing effect of the filament to the hands of customers. ⑤【Clog-Free and Bubble-Free】 -SUNLU 3d printer PLA filament consistent diameter tolerance 1.75mm ±0.02mm, ensuring tangle-free and knot-free. Rigorous 24-hour pre-packaging drying, plus vacuum-sealing, guarantees moisture-free printing, eliminating clogs and bubbles. Increase your printing success rate. ⑥【After Sales Guarantee】 -SUNLU, founded in 2013, is a high-tech company dedicated to research and development, production and sales of 3D printing filaments, 3D printers and various 3D printing materials such as PLA, PETG, 3d resin etc. We are committed to making ongoing and exceptional contributions to the 3D printing industry.