LYKKE Cord Connectors - use this cable connector to attach two cables together into an extra long cord. This is very useful for knitting wide projects.  There is a hole in the center of this cable connector, so you can tighten it with a key, the same way that you attach a cable to a needle tip. Each cable connector is 1.5 inches in length, package includes 3 cable connectors and tightening key.