Ngwongwo barbell nwere ngụkọta nke mkpanaka 5 nghọta, nke ọ bụla n'ime ha nwere ike ibu nnukwu ibu.Otu ọkpọkọ ígwè dị n'etiti na-ejikọta akụkụ abụọ ahụ.Ọdịdị nke triangular na-eme ka ọkpụkpụ ahụ kwụsie ike ma na-aba uru na mgbatị ahụ, ebe a na-etinye barbells na mkpanaka ọzụzụ., tube oval na-eme ka shelf ahụ dịkwuo mma