Maboti Okulitsa ndi maulalo apadera olumikizira omwe amagwiritsidwa ntchito kumangirira zothandizira mapaipi, zopachika, zothandizira, kapena zida kumakoma, pansi, ndi nsanamira.
Bawuti yokulirapo imakhala ndi bawuti yamutu, chitoliro chokulirapo, chochapira chathyathyathya, gasket yamasika ndi mtedza wa hexagon.
Akagwiritsidwa ntchito, kubowola (nyundo) kumagwiritsidwa ntchito pobowola dzenje la kukula kofananira pa thupi lokhazikika, ndiyeno bawuti ndi chitoliro chokulirapo zimayikidwa mu dzenjelo.