Why is this power cable sometimes polarized and sometimes not?

C2G 27398 6Ft 18 AWG 2-Slot Non-Polarized Power Cord 2 slot non polarized power cord power cords to wear out and not provide what we need To that end, why not invest in the XTREME 10 ft Polarized AC Universal 2-Slot Cable At 10 ft , it's 24 slot watch box C2G CG27398 AWG 2-Slot Non-Polarized Power Cord, NEMA 1-15P to IEC320C7,6' , TAA Compliant Brand: C2G by Legrand ADI #:2D-CG27398 Model #: CG27398

2017 slot 1 dilr Buy C2G 18 AWG 2-Slot Non-Polarized Power Cord featuring Spare or Replacement, Fully Molded Design Review C2G null