Proper spacing between flight and barrel is critical to the smooth trajectory to your dart throws. The optimal shaft will provide balance and stability to your dart's path to victory. The Viperlock Dart Shaft is the peerless solution to optimize your game. Forged from shatter resistant Polycarbonate, the Viperlock Dart Shafts can be depended upon for night after night of dart-throwing fun. Pick the color and length that completes your dart as the Viperlock Shafts features many options for both. The included aluminum Viperlock ring prevents flights from escaping and becoming lost, so you can keep your favorites on as long as you like.