Concentric cables are a type of cable that is widely used in the power and telecommunications industries. They are used to transmit audio, video, and other data signals. There are several synonyms for concentric cables, including coaxial cables, shielded twisted pairs, and twisted pair cables. Coaxial cables are used in high-bandwidth applications such as cable television and broadband internet. Shielded twisted pairs are used for medium to high-bandwidth applications such as local area networks. Twisted pair cables are used in low-bandwidth applications such as telephone lines. Whatever the requirement, there is a type of concentric cable that is suited to the task.