The line tends to square up a bit when put into a pipe bender. Do NOT exceed 85-90 degree bends with this line set on the 5/8\" line! Factory flare was fine, no burrs. I cut, bent, and re-flared mine so that I could run the line set through a wall and then out the house through the basement. Flares but could be higher grade copper. Does not flare as well as some other test pieces I did on a higher quality copper. The insulation is nice, doesn't rip / shred easily. I did not use the copper wires or other parts since I was just getting this to replace one of my older line sets that I kinked trying to install. Overall, get the job done!