When you want a super skinny Ethernet / CAT-6 cable, this noodle-y UTP jumper is only 3mm thick at the center, so it can flex around enclosures easily. This cable is 1 meter long, comes in Adafruit black. CAT6 means it's great for Ethernet-based LANs and other data networks. UTP means the wires are unshielded - much thinner but not great for ultra-long lengths (thats why its only 1 meter) 

This is a 'straight-thru' cable, not a cross-over cable. If you need an Ethernet cross-over cable, this one won't work.