Higher Impact Strength & Toughness PLA Plus known as the flagship product of Duramic 3D, PLA Plus filaments (PLA+) 1.75mm are made of USA high-purity raw material from Natureworks. Duramic 3D PLA Pro filaments feature 5 times impact strength , which is perfect for printing functional models with higher toughness need. Upgraded Cardboard SpoolDuramic 3D Pinter PLA Plus (PLA+) filament 1.75mm has gradually upgraded to cardboard spool along with dual stickers, which allows convenient sorting and full recycling. The filaments remain the same formula and quality. Jam-free& Smooth PrintingDuramic 3D PLA plus filament features unique patented Jam-free technology and 100% vacuumed package in resealable with desiccant, which makes no room for clogging and bubbling. Wide Options for Color &Color Combination Duramic 3D PLA Plus Filament 1.75mm offers not only more than 20 different colors but also nearly 30 color combinations of 2 pack which are more cost-effctive. Tangle-f