I-unit yokubamba-yokubheka (eqinisweni "umshini wokubheka ukubamba") kuyindlela entsha yokubheka ekwakhiwe ukwenza imithetho elula yezinkontileka zesitripu, okuyinto ikhombisa izinhlobo zomshini wokubheka we-roll ne-mshini wokubheka ukubamba. Izimo zakhe zokusebenza kuyinto ukuthi isitripu siyakwazi ukwenza ukunyakaza okuphazamiseka ngenxa yokubamba kwesikhumba sokubamba nokubheka okuphambili okuncikezela nokubheka okuphambili okuncikezela. Kuyakwazi ukuthatha izifo zezigaba ezintathu zesitripu, njengokubamba kwesikhumba, isitolo sokuqala nokubamba okukhulu, futhi kakhulu kwenza kube okuhle kwezinye izinto.