Description   PART NO: SIZE DFR- 020516 1/4"    x 5/16" DFR- 0203 1/4"    x 3/8" DFR- 0204 1/4"    x 1/2" DFR- 051603 5/16"  x 3/8" DFR- 0304 3/8"    x 1/2" DFR- 0305 3/8"    x 5/8" DFR- 0405 1/2"    x 5/8" DFR- 0406 1/2"    x 3/4" DFR- 0506 5/8"    x 3/4"