CMD8111509 Black Nylon Cable Tie, 380mm x 7.6 mm. Cable ties are a type of fastener used for holding items together, most commonly electrical cables or wires. These cable ties are made from Nylon 66 (also known as nylon 6.6) and are weather resistant so can be used in outdoor applications. These ties are a one-piece, self-locking fastener and function like straps to keep cables tidy. They are available in a range of sizes.