ʻO ka ipu ʻeli hydraulic mechanical hana pālua
He mea hana lua ka ʻōmole wili e hāʻawi ana i kahi ukana hopena axial i kahi paʻa o ke kaula wili. ʻO nā ʻōmole ka laina mua o ka pale e kūʻē i ka paipu paʻa a hiki ke hoʻopakele i nā mea hoʻohana mai ka lawaiʻa pipiʻi a me nā hana hoʻoponopono ma ka "hoʻokuʻu koke ʻana" i ke kaula.
Hiki iā Landrill ke hoʻolako i ka ipu ʻeli hydraulic a me ka ipu ʻeli hydraulic-mechanical hana pālua a me ka ipu lawaiʻa Super