Cholumikizira cha MU cholumikizira njira yokhazikika yokhala ndi zomangira zomwe zitha kugawidwa m'magawo awiri: Mitundu yamitundu yambiri ndi Mtundu wa Msonkhano, womwe uli ndi Kiyi yogwira ndi Kiyi yokhazikika.Ndiye Crimp ndi mitundu iwiri: "Mmodzi Crimp" ndi "Awiri Crimp";Boot ili ndi zida zamitundu iwiri: imodzi ndi mphira, ina ndi Bellcore, ndipo boot ili ndi mitundu yosiyana malinga ndi zomwe mukufuna.