ISO 10103:2018 specifies the overall length and the maximum head thickness for double-headed box wrenches, flat (Form B) and offset (Form A).
NOTE The wrenches covered by this document are the ones identified in ISO 1703:2005 under reference numbers 1 1 02 03 0 and 1 1 02 04 0.
ISO 10103:2018 covers technical specifications for the test torque of these products. All other technical specifications are given in ISO 1711-1.