CUESOUL TERO AK4 Dart Flights Standard Shape-CUESOUL Original Design This innovative TERO AK4 flights are new patent system from CUESOUL,well-designed built-in spring telescopic and rotation combo system(combine with AK7 flights),perfect for soft tip and steel tip darts.Rotation (without wobbling)allows each dart to be more closer together,avoids flights ripped out caused by hitting previous dart,telescopic prevent dart's deflection when hit the previous dart,both assure the flights more durable use .This TERO system help your darts fly more stable and true,it will keep you from bend down and pick up flights in the heat of a dart game. Features: This is dart flights only.Dart Flights KiteShape-Dart Flight Solid Color This AK4 dart flights should be combined with AK7 dart stem/dart shaft Weight:different weight with TERO AK7 A/B/C/D/E/F/G/H dart shaft,Pls refere to the pictures. Size:With TERO AK7 A/B/C/D/E/F/G/H shaft,dart shaft length in 25mm/32mm/34mm/37mm/40mm/43.5mm/47mm/53mm,help you to find a best length and best grip to improve your dart accuracy. This TERO system help your darts fly more stable and true,it will keep you from bend down and pick up flights in the heat of a dart game.it is new patent system from CUESOUL,(combine with AK7 shafts),perfect for soft tip and steel tip darts.This TERO system help your darts fly more stable and true,it will keep you from bend down and pick up flights in the heat of a dart game. CUESOUL AK4 Standard Shape/Slim Shape/Kite Shape/ Shield Shape/Diamond Shape This is Standard Shape Preview different shape when combin with AK7 Dart Shaft