The combination spanner re inventedmore control during pre tighting easier to guide variable handle cross section doubles surface contact with hand high mechanical performance combined with compact design complying with aeronautical standards industrial and automotive iso 691 nf iso 691 iso 7738 nf iso 7738 iso 3318 nf iso 3318 iso 1711 1 nf iso 1711 1 nf e74 306 aerospace sae as 954e