Acculon Wire is constructed of either 3 or 7 micro spun, stainless steel wires woven together and then nylon coated. It is the most inexpensive nylon coated wire available, and it is a great all purpose wire for beginners, or when you don't want to add significant costs in stringing wire to your jewelry.  Acculon offers some flexibility and kink resistance, but not as much as Soft Flex. This is due to the number of strands inside the nylon coating. The basic rule of nylon coated stringing wire is:  more strands = more flexibility.