Ma Screw Jacks amagwiritsidwa ntchito kukonza magalimoto a njanji, migodi, thandizo la zomangamanga, komanso kukweza ndi kutsitsa zinthu zolemera. Chifukwa ndi yonyamula, yosavuta kuyisamalira, komanso yotetezeka kugwiritsa ntchito, imagwiritsidwa ntchito kwambiri ponyamula mafoni. Mwachitsanzo, galimoto ya njanjiyo imatha m'malo mwa mudzi wa axle ndi chitsulo chachitsulo choyikapo ndi kuthandizira, kuti akwaniritse cholinga chokweza bwino komanso modalirika.