ʻO nā bearings pōleʻa hoʻokuʻu ʻelua ʻelua he mea holoi ʻauʻau, ʻelua mea holoi hale a me ʻelua hui pōleʻa hale. Hoʻopili ʻia kēia mea holoi ʻauʻau ma waena o nā hīnaʻi ʻelua, e ʻae ana i ka lawe ʻana i nā ukana axial ma nā ʻaoʻao ʻelua. Aia i loko o ka hale pa'a nā pōpō i ka wā e alaka'i ai ka mea holoi noho ho'opololei iā lākou.
