Ogige iko enweghị frame enweghị ihe ọ bụla ọzọ gbara iko ahụ gburugburu. A na -ejikarị bolts ọla maka nrụnye ya. Anyị na -enye ogwe iko nwere mmachi 8mm, ogwe iko nwere mmachi 10mm, ogwe iko nwere mmachi nke 12mm, ogwe iko nwere mmachi 15mm, yana iko laminated yiri ya na iko kpuchiri ọkụ.