Polymaker PLA (Polylactic Acid) PolyMax Spool, 1.75" Diameter, 750 g, 1.75 mm, Black Jam Free: Our patented Jam-Free technology dramatically improves the heat stability of our PLA filaments, by combining the latest development in biopolymer formulation and advanced polymer processing technologies Extremely Tough : Featuring increased impact strength of up to 9 times that of regular PLA and 21% better than ABS, PolyMax PLA is a sure winner when it comes to toughness With PolyMax PLA you can get rid of that potentially hazardous ABS and still achieve the same structural strength with even more benefits such better printer compatibility Easier printing, less warping, no hazardous odors, and in many cases even better mechanical properties