Ƙunƙarar ɗaurewa na iya gyarawa ko haɗa ƙuƙuka daban-daban akan hasumiya ta ƙarfe ko sanda. Yana da nau'in sanda da nau'in hasumiya bisa ga halayen layukan. Nau'in hasumiya shine splint karfe, yana gyara matsi daban-daban akan garin ƙarfe ba tare da lalacewar ƙarfin hasumiya na ƙarfe ba. Nau'in sandar sanda shine riko da hoop. Ana amfani da splint na tashin hankali don hasumiya ta kusurwa ko hasumiya ta ƙarshe, tana ba da madaidaicin rataye zuwa haɓakar kebul na gani na ADSS. Ana amfani da madaidaicin splint don hasumiyar tangent, yana ba da madaidaicin rataye zuwa kebul na gani na gani ADSS. Ƙunƙarar riƙon tana gyara matsi da matsi na dakatarwa akan sandar, da samar da wurin rataye zuwa tsantsar igiyar gani na ADSS.
Siffofin
* Mai ɗorewa
* Sauƙaƙan hawa kewayen sanda
*Square/Hex head bolt da goro na zaɓi,
* Babban ƙarfin aikin injiniya,
* Faɗin iyaka don tsayin sandar diamita daban-daban,
* Hot tsoma galvanized surface jiyya da tsatsa da lalata,
* Ana amfani da kayan ƙarfe mai kauri mai inganci don ƙarfin ɗaukar ƙarfi da dawwama.