Nke a bụ igbe ikuku ikuku dị oké ọnụ ahịa, nke nwere atụmatụ abụọ pụrụ iche: 1. A na-eji mkpuchi mkpuchi nwere ụdị gasket, na panel nke elu nwere ike iji plastik, akpụkpọ anụ, diamond, ma ọ bụ ngwa ngwa elu elu; 2. A na-emepụta ngwaahịa a na gburugburu etiti, nke ga-eme ka ọ dịkwuo mma na okomoko.