Check the listing for details. CUESOUL TERO AK4 Dart Flights Diamond Shape-Solid Color. Condition: New. Listed at 9.39 USD. This innovative TERO AK4 flights are 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. ​ This is AK4 dart flight only Considerate micro-line design on flight sheet to set up another reinforce shape on flight,strongly keep the sheet in shape,dual protection to avoid torn off.Whats more,it could also guide you to cut according to the line ,to remove the broken edge and change the flight to a smaller shape ,even in a different shape,make your new free style. Black/White/Red/Yellow/Blue/Green/Ice for choose Differnt weight when combin with AK7 dart shaft Black: White: Red: Yellow: Blue: Green: Solid: