Oyi akpọrepu ígwè eriri igwe isi ihe bụ na-abụghị alloy ala carbon ígwè, nnweta nke ọkpụrụkpụ bụ 0.12mm ka 3mm (11nleba ka 36 nlele).Ogologo eriri igwe bụ 500mm ruo 1500mm.
Dị iche na eriri igwe na-ekpo ọkụ, igwe igwe oyi na-atụgharị na-ezo aka nchara nchara nke a na-akpụgharị ozugbo n'ime otu ọkpụrụkpụ nke nwere igwe na-ekpo ọkụ n'ime ụlọ ma e jiri ya tụnyere eriri ọkụ na-ekpo ọkụ, igwe oyi na-ekpo ọkụ nwere elu na-egbuke egbuke ma dị ọcha.