Pentathlon Darts – TDP Series – T6 – 90% Steel Tip Tungsten. Features: 90% Tungsten Barrels, Complete with Flights and Shafts.Pentathlon Darts – TDP Series – T6 – 90% Steel Tip Tungsten. Features: 90% Tungsten Barrels, Complete with Flights and Shafts.Pentathlon Darts – TDP Series – T6 – 90% Steel Tip Tungsten. Features: 90% Tungsten Barrels, Complete with Flights and Shafts.