Amawasha ayisicaba ensimbi engagqwali ayizici ezibalulekile ezinhlelweni eziningi zemishini nesakhiwo. Zisetshenziselwa ukusabalalisa umthwalo we-fastened enentambo, njengebhawudi noma nati, endaweni engaphezulu, ukuvimbela ukulimala kokubotshwa kwento. Insimbi engagqwali ivamise ukuthandwa ngenxa yokungagqwala nokuqina kwayo, okuyenza ifanelekele ukusetshenziswa lapho ukuchayeka kumswakama noma izindawo ezinokhahlo kuwukukhathazeka.