... 4) softer than PLA;(5) diameter of 3.0/1.75mm, variations + /-0.1mm,roundness +/-0.05mm;(6) 1 kg /plastic spool ... smoke ,tastelesswhite smoke, concentrated flavor ,make headacheRoundness+/-0.05mm+/-0.03~0.08mmwater absorptionVery low, no bubbles occur when printing ... to your requirements . we have colors: Natural, white, black,red, sky blue, dark blue ,florescent green,dark green, florescent ...