For use with Olsson Block Nozzle Torque Wrench available at the attribution link above. I created new innards for the torque wrench by Anders Olsson that allows you to use a 3/8" drive socket rather than a 1/4" drive socket. Socket locks in tight and shouldn't fall off. Fits in the original Torque Wrench body. I also modified the wrench to provide a bit more torque than the standard by increasing the central shaft diameter and thus shortening the fins and making them more rigid.