Anyị na-elekwasị anya ma na-achịkwa nkọwapụta mmepụta ọ bụla, Naanị maka ịnyefe ngwaahịa dị mma nye ndị ahịa.
Ihe eji egbu egbu bụ nchara nchara dị elu, dị ka 42CrMo, 50Mn.
Ngwa a na-akpụgharị ahụ bụ GCr15 ma zụta ya n'aka ndị na-ebubata ụlọ nwere ezigbo mma.
Ngwaahịa dị gụnyere: Bọọlụ Ahịrị otu na okpukpu abụọ, Roller Row Atọ, Cross Roller Sealed and Unsealed Internal Geared, Mpụga nke Mpụga na enweghị Geared ma ọ bụ ebugo ya.