They have OGV® profiles, meaning that tightening torque is applied to the sides rather than to the angles of the nut.
ISO 2725-1, DIN 3124, ISO1174-1, ISO 1711-1 and ISO 691.
The set includes the following sizes:
9, 10, 11, 12, 13, 14, 15, 17, 18 and 19mm.
