Wera Square Drive Torque Wrench Open-ended spanner socket bit 615447 - Wera 05078682001, Open end insert, for hexagon screw heads or nuts; for torque wrenches of the Click-Torque X series with 14x18 mm holder. Wera 05078682001 7780 Open End Insert 14x18mm 14x18 x 29 x 61mm