RAMBERY Silk Tri Color 3D Printer Filament, Triple Color Change by Angle, Silk Shiny PLA Filament Red-Yellow-Blue, 1kg Spool (2.2lbs)

Amazon-only brand specialising in rainbow and silk PLA filament. The catalog is small and tightly focused — fast color-change rainbow spools, silk rainbow variants, and glow-in-the-dark rainbow PLA. Sold primarily in 200g × 4 spool multi-packs rather than standard 1 kg spools.