Mo te hunga tauhou ki tenei mara, he tauhou te riveting screws. Ko nga mea kei roto ko te kowiri tira, te waro waro, te parahi, me te konumohe. Ko te mahunga he papa (porowhita, hexagonal ranei, me etahi atu), kua tino miro te rakau, a he niho puawai kei te taha o raro o te mahunga, ka whai waahi ki te aukati i te wetewete.