A versatile tool often found in a mechanic's toolbox, the ratchet is a hand-operated device that allows for rotational motion in only one direction. It features a handle, a socket attachment, and a mechanism that enables the socket to turn when the handle is moved in a specific direction. With its efficient design, the ratchet provides ease and precision when tightening or loosening bolts and nuts, making it an indispensable tool for various mechanical tasks.