Ugereranije n'umutwe usanzwe urambiranye, ubwoko bushya bufite ibyiza bikurikira:
1, Kuyobora kuri roller, hamwe ningingo nyinshi zingoboka hamwe nubuyobozi buhamye.
2, Guhuza ingingo hagati yuruzitiro nurukuta rwimbere rwakazi rugabanya guterana amagambo kandi birebire gukoresha ubuzima;icy'ingenzi, irinda ikibazo cyo gusimbuza kenshi padi iyobora.
3, Umusaruro urashobora kwiyongera kabiri.
4, Ingano irashobora guhindurwa murwego rwa mm 5, ntabwo ikeneye gusimbuza ibice ibyo aribyo byose, kubikorwa rero biroroshye cyane kandi bitwara igihe.
Urupapuro rwemeza urwego rwigihugu, biroroshye cyane kubona ku giciro cyiza ku isoko, igiciro cyo gukoresha ni gito.
Ubwoko bushya burambiranye umutwe burageragezwa inshuro nyinshi, bufite imikorere ihamye kandi bugira izina ryiza kubakoresha.