Sink Cock

I assume you are referring to a type of plumbing fixture commonly known as a "sink faucet" or simply "sink cock". This is a device that controls the flow of water into a sink basin for activities such as washing hands, dishes, or other items. Sink faucets can come in various styles and finishes, including single-handle or double-handle designs, chrome, stainless steel, or other materials. Some models may also include additional features such as pull-out sprayers, built-in soap dispensers, or water filtration systems. If you are experiencing any issues with your sink faucet, such as leaks, low water pressure, or difficulty turning the handles, it may be best to consult a plumber or repair professional to diagnose and fix the problem.