Galibi ana ƙirƙiro rivets masu rami don ƙera ko gyara kayan haɗin. Ba a fayyace lokacin da aka ƙirƙiro rivets masu rami ba. Amma an ƙirƙiro rivets ɗin a ƙarni na 9 ko 10 AD, inda aka 'yantar da bayi daga aiki mai nauyi kamar takalman dawaki da aka ƙusa.
Lokacin Saƙo: Satumba-22-2021