a tool used with workers' hands

holding device consisting of one or both of the opposing parts of a tool that close to hold an object

twist or pull violently or suddenly, especially so as to remove (something) from that to which it is attached or from where it originates

can be changed to different settings

a wrench for Allen screws

a wrench with a v-shaped jaw and serrations on one side (resembles the open jaws of an alligator)

a wrench with a closed loop (a socket) that fits over a nut or bolt head

a wrench shaped like a brace (has a handle shaped like a crank) and a socket head

holding device consisting of one or both of the opposing parts of a tool that close to hold an object