Coaxials are a type of cable that consists of a central conductor surrounded by an insulating layer, shielded by a foil or woven copper braid, and then covered by a protective jacket. Synonyms for coaxials include coax, coaxial cables, broadband cables, high-frequency cables, and video cables. Coaxials are commonly used in audio and video applications, such as connecting televisions, antennas, and speakers. They are also used in data transmission, such as connecting modems and routers to the internet. Coaxials are reliable and provide a high-quality signal, which is why they are preferred in many commercial and residential applications.