Dart players, these Cuesoul TERO AK4 flights are a serious upgrade for your game! The slim shape in classic black looks sharp and performs even better. Each flight weighs only 0.7 grams, so they're lightweight without being flimsy. Now, here's the important part - these are designed specifically to work with TERO AK7 shafts (sold separately), so you'll need those to complete your setup. When you pair them with the AK7 shafts, the combo weights are 1.4g with small shafts, 1.5g with medium, and 1.6g with large shafts. The total lengths range from about 2-2/5 inches with small shafts up to 2-9/10 inches with large shafts. This TERO system is actually patented technology from Cuesoul, and it's designed to make your darts fly more stable and true to where you're aiming. The real game-changer though? These things seriously reduce how often you have to bend down to pick up flights during a game. We've all been there - you're in the middle of an intense match and constantly stopping to retrieve flights that popped off. With this system, they stay put way better. They work great for both soft tip and steel tip darts, so no matter what type of darts you play with, these flights have you covered. The quality is exactly what you'd expect from Cuesoul - competitive performance without breaking the bank. If you're tired of constantly replacing flights or dealing with unstable dart flight, this system is definitely worth trying out. Your game (and your back) will thank you!