The Viper Dart Flight Hole Punch Tool makes it easy to punch a perfect rectangular slot into your dart flights so they can accept a stem ring to keep flights securely on plastic or nylon shafts.FeaturesHeavy duty steel and resin flight punchPunches a perfect slot into dart flights to accept a stem ringPrevents flights from popping offCompact and easy to useIncludes three sets of stem rings, a total of 9Does not include shafts or flights