Umurongo umwe wuzuye wuzuza silindrike ya roller ni igice cyitsinda rya radiyo.Ibi bikoresho bigizwe nimpeta zo hanze, impeta y'imbere hamwe byuzuye byuzuzanya.Bitewe no kubura akazu, ubwikorezi burashobora kwakira umubare munini ushoboka wibintu bizunguruka
