The RCBS Flash Hole Deburring Tool is a great tool for any reloader who is
looking to increase the consistency and reduce variations from case to case to
get the best possible accuracy out of their shooting equipment. When brass is
manufactured there are burrs that are sometimes created when the flash hole is
tapped out. This tool quickly removes that burr creating more consistent
ignition. This process only needs to be done once for the complete life of a
piece of brass.