Compatible For manual handheld operation, adjusts multiple size fasteners during household equipment and mechanical component maintenance tasks Adjustable jaw structure changes inner span width to match different outer diameters of standard hexagonal and square fasteners Smooth jaw inner surface reduces scratch marks generated when rotating contact with metal fastener outer planes Elongated handle section increases applied torque and eases labor output when loosening tightly fixed fastener parts Integral forming tool body retains stable structural strength after repeated rounds of continuous twisting operation, Manufacturer: Zhongling