... of premier grade ABS material, low water absorption, high tough. Factory direct sales, inexpensive, buy more, bigger discount! ! 3DD ABSordinary ... temperature and dragging rate , make filament diameter range at 1.6-1.8mm/2.8-3.0mm, roundness +/-0.05mm, each spool net ... with scrap outlet, rework&recycle material, or dispose, but for quality assurance purpose.4.packaging We put each filament /spool ...