Magalasi athu otsetsereka amapangidwa ndi mafelemu apamwamba kwambiri, okhuthala a aluminiyamu, magalasi osaphulika osaphulika, ndi masiladi achitsulo. Magalasi otsetsereka ndi gawo lofunika kwambiri la zovala, ndipo magalasi otsetsereka samangopereka chidziwitso chapadera cha zovala, komanso amagwiritsa ntchito mokwanira malo ovala zovala. Mpira wachitsulo wokhala ndi slide njanji ndi yosalala komanso yabata, yoyenera kufananiza zovala zanu komanso kusangalala ndi zovala zopanda nkhawa komanso zapamwamba.