one-way thrust tapered roller bearings, ʻelua-way thrust tapered roller bearings
Hoʻokahi ʻaoʻao (ʻelua-ʻaoʻao) ʻo nā huila huila pahu pahu i haku ʻia me nā apo holo kaʻa like ʻole (nā mea holoi, nā mea holoi noho), nā huila cylindrical a me nā hui hale.