The Strong Ultra v2, a successor to the Strong Ultra, is a revised and corrected version with a unique anti-abrasive technology that drastically reduces abrasion, which makes it much easier to print with low nozzle / drag wear, all for a cost much lower than the first version. The Strong Ultra is a nylon filled with fiberglass, giving it an outstanding resistance. INOX / STEEL nozzle and INOX drive is highly recommended. Article: http://www.3dnatives.com/anneau-impression-3d-22092016/ (Strong v1
Technical sheet