Bushng amatanthauza mphete ya mphete yomwe imagwiritsidwa ntchito ngati khutu lakunja. Bushing imatha kusewera maudindo ambiri, nthawi zonse, ndi mtundu wa chinthu chomwe chimateteza zida. Bush, kugwedezeka kumatha kuchepetsa zida, kugwedezeka ndi phokoso, ndipo zimathandiza kupewa chiwongolero komanso kuwongolera zida zamakina.