High purity, on using materials with good purity and do not add waste materials to improve the material. High precision,The wire diameter tolerance is stable at ±0.02MM, which is more conducive to the printing effect. Environmentally friendly and biodegradable,Food grade raw materials, truly odorless and biodegradable. High quality,Good tensile strength, ductility, fluidity,Very low shrinkage. Our silk ribbon PLA filament is engineered to provide a printing experience. Enjoy smooth and seamless printing from start to , eliminating the need for constant monitoring and adjustments. Focus on your creativity while our filament takes care of the rest. Name:Silk Rainbow Filament Silk Texture 3D Printing Filament Hign-concerned Chemical:none Model Number:Silk Filament Tolerance:+/-0.02mm Diameter:1.75mm Use:For 3d printer and 3d printing pen Length:330m Colour:As Shown Material:Silk PLA Package Contents: 1 * Printer wire Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.