Rainbow Color Silk PLA+ Filament-- iBOSS Rainbow-color silk filament have a fast color change. With a 360° rotation, it reveals prints with various color combinations. iBOSS Long distance Rainbow Filament color-changing every 13 meters.Unlock your creativity with rainbow color printing capability with varying colors from different angles. Dimensional Accuracy & Consistency-- iBOSS 3D Printer PLA filament of 1.75mm diameter, Minimum tolerance and low warping to ensure consistent feeding and stable prints.Dimensional accuracy + / - 0.02 mm ; 1 kg spool (2.2lbs), which making filament that have an outstanding surface finish and are highly precise.