A magnetic chuck is a device, or workholder, that uses magnetic force to hold a ferrous metal item during machining. It also refers to magnets used to secure a workholder, such as a vise or other fixture, to the work machine. An electromagnetic chuck is a type of magnetic chuck that produces an adjustable magnetic pull, allowing it to hold a variety of workpieces. Processes that use magnetic chucks may include drilling, grinding, and turning. They are not restricted to only industrial use; some hobbyists use magnetic chucks.