Double access flex, e tsejoang hape e le back bared flex, ke lipotoloho tse feto-fetohang tse nang le lera le le leng la conductor empa le sebetsoa e le ho lumella ho fihlella likarolo tse khethiloeng tsa paterone ea conductor ho tsoa mahlakoreng ka bobeli.Le hoja mofuta ona oa potoloho o na le melemo e itseng, litlhoko tse khethehileng tsa ts'ebetso ea ho fumana likarolo li fokotsa tšebeliso ea eona.