ʻO ka C-channel roller kahi huahana maikaʻi loa i hoʻolālā ʻia e hoʻopau maʻalahi i nā hana halihali. Hana ʻia mai nā mea waiwai kiʻekiʻe, paʻa a hilinaʻi kēia roller, e hōʻoia ana i ka hana lōʻihi. Loaʻa iā ia nā hiʻohiʻona maikaʻi loa a ʻo ia ka hopena kūpono no nā ʻano noi like ʻole.
ʻO ka hana nui o ka wili kila kaila C-shaped no ka maʻalahi o ka neʻe ʻana o nā mea kaumaha. Inā ʻoe e hoʻouka a hoʻokuʻu ana i nā ukana i loko o kahi hale kūʻai a i ʻole ka lawe ʻana i nā lako i ka wā e neʻe ai, hāʻawi kēia roller i kahi ʻike maʻalahi. ʻO kāna hoʻolālā kūikawā e hiki ai i ka neʻe ʻana a me ka hoʻomalu ʻia, e hōʻemi ana i ka pilikia o nā pōʻino a me nā ʻeha.