Chinthu chabwino kwambiri cha Seling Screw ndi ntchito yake yosindikiza yopanda madzi. Kaya ndi zida zakunja, zida zam'mlengalenga, kapena zida zamankhwala, Zisindikizo Zosindikiza zimatha kuteteza bwino kulowetsedwa kwa chinyezi, zamadzimadzi ndi fumbi m'malo onyowa kapena ovuta, kuwonetsetsa kugwira ntchito mokhazikika komanso moyo wautali wa zida.