I have used several different Cat6 and Cat5e cables. When I received them they were not Cat6 but Cat5e. I checked the labeling to see if I sent the wrong cables, no, labeled cat6. Open. and no center separator and low crimping speed. Very cheap for 150ft which should have been a mark of history. Look back. Honestly, their own ads and photos don't show the center divider. Don't worry that your network cable is specifically Category 6 and just worry about the price, it will cover your bill.