What is hardware handle additional article of the wrench?

Metal polishing base has been implemented, address: AngYi fishing cross the village ( Wood group for land) Polishing machine number 800, now the relevant matters: - ->
hardware handle additional article of the wrench is a kind of common installation and disassembly tool, is the use of lever principle turn screw bolt, screw, nut and other thread a bolt or nut opening or hole firmware set of hand tools. Wrench is usually made of carbon or alloy material of structural steel.

wrench usually at one end of the hilt or both ends of the clamping bolt or nut open or set of holes, along the thread direction of rotation when used in petiole exerting force, can turn screw bolt or nut.
this is hardware handle additional article of the wrench is introduced.