Square drive insert, for 1/2" square socket wrench inserts and 1/2" connecting parts with square drive; for torque wrenches of the Click-Torque X series with 14x18 mm holder.
Adapter insert ror the use of square plug-in tools 9x12 mm in torque wrenches with internal square 14x18 mm; for torque wrenches of the Click-Torque X series with 14x18 mm holder.