US Darts - 3 Sets (9 Flights) Pentathlon Slim Blue Dart Flights 3 sets (9 flights) of Ex-Tough Blue Pentathlon dart flights These flights will last longer and give better in-flight stability than either regular poly or Dimpex flights The smaller surface area reduces deflections from in-coming darts Also known as Pent-thalon, these flights have been used by top players for over 20 years.