A ratchet is a handle that snaps into one end of a socket by means of a square-drive connector. The other end of the socket fits over a fastener. A mechanism in the ratchet allows the handle to engage and tighten the fastener when you swing it in a clockwise direction and turn freely when you swing it counterclockwise. Thank you for audio bensound-perception #tools #mechanical #3d #engineering #mechanic #auto #automotive #automobile #how #animation #mechanicaljobs #engine #car #knowledge #engineon