Dera lapamwamba la screwdriver ndi lalikulu, ndipo limatha kukhala lozungulira kapena la hexagonal, kotero kuti zida monga screwdriver kapena wrench zitha kutembenuza screw.Kumwamba kotuluka kumalepheretsanso wononga kuti zisabowole mozama kwambiri ndikuwonjezera kukakamiza kwa screw pazinthuzo.Zomangira zowerengera nthawi zambiri zimatha kuchotsedwa kapena kulowetsedwanso mwakufuna popanda kusokoneza luso lawo, komanso zimatha kupereka mphamvu zochulukirapo kuposa misomali, ndipo zitha kugwiritsidwanso ntchito.Mutu wa countersunk screw ukhoza kumizidwa kwathunthu pazinthu zopangira, ndipo mutu wa screw sudzachita gawo lotsekereza.
Amagwiritsidwa ntchito pazida zamagetsi, makina apakompyuta, zida zamakina, zida zapakhomo, zinthu za digito, ntchito zosungira madzi, zokongoletsera ndi zomangamanga, ndi zina zambiri
