Bestar imapereka mzere wathunthu wazitseko zama roller ndi zina. Izi zimaphatikizapo zida zonse zokhotakhota ndi zida zina monga akasupe opumira, masika achilengedwe, ng'oma, zingwe zonyamula, latch, loko wapakatikati, kulanda nyengo, stapler, zikhomo, shaft chubu ...