Udupira two gusimbuza twa MND-C73B dushobora guhindurwa dutanga uburenganzira bwo kugera ku gikoresho cyose cyo gusimbuza ibyuma gifata umwanya muto cyane. Udupira two gusimbuza ibyuma dushobora gusimbuza ibyuma kuva kuri bitatu kugeza kuri 15 (cyangwa birenga) mu itsinda rimwe, bigatuma biba amahitamo meza yo kuzigama umwanya ku muntu wese ukora imyitozo yo gusimbuza imbaraga mu rugo. Ibyo biroroshye iyo ushyizemo igikoresho cyo gusimbuza ibyuma, gishobora guhinduka kuva ku cyoroheje kikajya ku gikomeye bitewe no gusimbuza icyuma cyangwa guhindura imiterere y'ibikoresho.
Buri gicuruzwa gifite igishushanyo mbonera cya patenti cya Amerika, hamwe n'imiterere yihariye n'imikorere by'ubushakashatsi bwihariye. Harimo agasanduku ko kubikamo ibintu bihuye kugira ngo bibikwemo udusanduku tworoshye guhindurwa mu dusanduku two kubikamo ibintu mu gihe kidakoreshwa; buri gasanduku kashyizweho ikimenyetso cy'uburemere bworoshye gusoma; gafata umwanya muto. Iyubakwa rirambye, utu dusanduku tworoshye guhindurwa dufite icyuma kandi twakozwe mu buryo buvanze na pulasitiki ikomeye.
Iyi dumbbell ikora byose hamwe iguha uburambe bwiza bwo gukora imyitozo ngororamubiri. Iyi dumbbell izamura amaboko n'umugongo. Ni nziza ku miterere, ubuzima bwiza, ndetse no kugabanya ibiro. Ishobora kandi gufasha gukomeza igice cyo hejuru cyangwa igice cyo hagati cy'umubiri wawe. Imiterere ihinduka ituma byoroha kuyishyira mu rugo.
1. Ibikoresho by'igicuruzwa: PVC + ICYUMA.
2. Ibiranga ibicuruzwa: Ibikoresho byiza, Nta mpumuro, Bika ikiganza neza.
3. Imyitozo y'ibanze, Iterambere ryo kuringaniza, Ingufu n'ubuzima bwiza, n'ibindi.