Ratchet Socket Set

socket set
A number of detachable sockets of different sizes for use with a socket wrench
A socket wrench, more commonly referred to as a ratchet, is a type of wrench, or tightening tool, that uses separate, removable sockets to fit many different sizes of fittings and fasteners, most commonly nuts and bolts.

ratchet
A device consisting of a bar or wheel with a set of angled teeth in which a pawl, cog, or tooth engages, allowing motion in one direction only
A ratchet is a device that allows continuous linear or rotary motion in only one direction while preventing motion in the opposite direction. The term is also commonly used to refer to a socket wrench, which employs an internal ratchet mechanism.
A bar or wheel that has such a set of teeth
A situation or process that is perceived to be deteriorating or changing steadily in a series of irreversible steps
move by degrees in one direction only; "a ratcheting lopping tool"
mechanical device consisting of a toothed wheel or rack engaged with a pawl that permits it to move in only one direction