Isikrufu esinendlela emine, esaziwa nangokuthi isikrufu esinendlela emine noma isikrufu sikaPhillips, iyithuluzi elinemisebenzi eminingi elivamise ukusetshenziselwa ukususa amantongomane emasondweni. Ivamise ukufaka idizayini enezinhlangothi ezine enamasayizi amasokhethi amakhanda amane ahlukene ekugcineni ngakunye ukuze kuhlaliswe osayizi abahlukahlukene bamantongomane abavame ukutholakala ezimotweni.
Idizayinelwe ukuhlinzeka ngendlela esheshayo nephumelelayo yokukhipha noma ukuqinisa amantongomane emasondweni, isikrufu esinezindlela ezine sivame ukusetshenziselwa izinguquko zamasondo noma eminye imisebenzi yokulungisa izimoto. Amasayizi ahlukene ekhanda lesokhethi kuma-wrenches avumela abasebenzisi ukuthi basebenze kalula ngamantongomane anosayizi abahlukene ngaphandle kokushintsha phakathi kwamathuluzi amaningi.
Lawa ma-wrenches ngokuvamile enziwa ngezinto ezihlala isikhathi eside, njengensimbi noma i-chrome vanadium, eqinisekisa amandla nokuqina ukuze kusetshenziswe ngokuphindaphindiwe. Angamanye amathuluzi okufanele abe nawo abathandi bezimoto, ochwepheshe bemishini, nalabo abadinga ukulungisa izimoto.
I-wrench enezinhlangothi ezine inezici ezilandelayo:
Sekukonke, i-4-way wrench iyithuluzi elinamandla, elilula futhi elisebenzayo lezinhlobonhlobo zamasayizi amantongomane, elinokuqina kanye nezinhlelo zokusebenza eziningi ezahlukene.