Wera 05078667001 | 7779/2 Adapter Insert 14 x 18mmAdapter 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. Key Features Square insert tool 14x18 mm For torque wrenches of the Click Torque X series with 14x18 mm holder For the use of square insert tools 9x12 mm in torque wrenches with internal square 14x18