Wera Tools - 7779/2 Adapter insert, 14x18 mmAdapter 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. 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 mm. With safety pin The chrome vanadium steel version makes the plug in tools