Ibikoresho bya Gleason spiral bevel, cyane cyane variant ya DINQ6, bihagaze nka linchpin mugukomeza ubusugire nubushobozi bwibikorwa bya sima. Gukomera kwayo, kuramba, hamwe nubushobozi bwo kohereza ingufu neza nibintu byingenzi bigira uruhare runini mumikorere yimashini muruganda rwa sima. Mugutanga amashanyarazi yizewe, ibikoresho byemeza ko ibikoresho bitandukanye bigira uruhare mukubyara sima bishobora gukora neza kandi bihoraho, amaherezo bikazamura ubwizerwe numusaruro mubikorwa byose byakozwe. ibikoresho bya bele ya Gleason bigira uruhare runini mugushigikira ingufu za sima zo gukomeza urwego rwo hejuru rwo kwizerwa no gutanga umusaruro.