US Patent 9862080 Double-ended wrench set with identical torque holes

The present invention is to provide a double-ended wrench set with identical torque holes, which comprises at least two double-ended wrenches having torque holes of a same configuration and a torque rod comprising a torque body and a torque head perpendicularly connected to the torque body, wherein each said torque hole is located in a wrench body of the double-ended wrench, the torque body has a greater length than the torque head, and the torque head has a cross section identical in configuration to the torque hole and is able to be fitted into said torque hole.