Cov rivets siv tau rau ntau daim ntawv thov nrog cov ntawv thov uas tsis muaj kev thauj khoom ntau. Cov rivets yooj yim siv thaum nkag mus rau tom qab ntawm daim ntawv ua haujlwm raug txwv lossis tsis tuaj yeem nkag mus tau.
Tus qauv taub hau txheem yog dome uas tsim nyog rau feem ntau daim ntawv thov.
