Nke a ekara-akpa anwụ ọnwụ igwe bụ ihe inyeaka ngwá megide dị iche iche ekara obere akpa dị ka atọ n'akụkụ sealing ekara na onwe-eguzo ekara obere akpa, nke ukwuu mma mmepụta arụmọrụ, ala mmepụta na-eri na n'ụzọ nkịtị aka siri ike nsogbu na ekara akpa punching akụkụ.Okwu ọ bụla, jiri nwayọ na-enwere onwe gị ịkpọtụrụ.
