Uruziga ruzengurutse kandi ruvuza igikoresho

· Gushoboza gukuraho ibipimo bitarenze igice kinini kandi hagati ya kabili

· Gutanga ubujyakuzimu

· Gushoboza guca hamwe, mu kaga no kuzenguruka

· Yashyizwe hamwe nicyuma gizunguruka

· Yashyizwe hamwe na knob yo guhindura umuheto

· Igipimo (Ø10, 15, 20, 25 MM) ku muheto