I bought this box of cable for a LAN party I'm hosting monthly. The cables work as advertised and move data, however the outer shielding is very thin. It could be due to the cheap RJ45 or Crimp tool I bought here on Amazon as well but with my setup I could not achieve a very tight crimp. This isn't too big of an issue, I did go and buy the cheapest of everything I needed so what was I to expect. All my cables worked the first LAN party, 2 had died by the second, and 5 were out of action by the third so all in all I got what I paid for.