The spanners in this 11 piece bahco combination spanner set are made from vanadium extra with a matt finish they have an open end angle 15 ring end 15 offset and equal openings at both ends conforms to din 3113iso 3318iso 7738 standards sizes 8 9 10 11 12 13 14 15 17 19 22mm the spanners are supplied in a black plastic pouch