Die Wrench DeluxeManufacture ID: 396495Hornady Lock-N-Load Deluxe Die Wrench- 3/4" wrench for die flats- When placed in one of the shell plate's cartridge case slots, this keeps the shell plate from slipping when tightening the center screw- 1/2" flats for spindle lock- 1-1/8" flats for split lock rings