This standard shape clear blue flight and short clear blue stem incorporates the innovative Condor Zero Stress concept. This short clear blue flight is measured from the ridge of the screw to the joint/link between the clear blue flight and the short shaft. Shaft length: 21.5mmThis standard shape clear blue flight and medium clear blue stem incorporates the innovative Condor Zero Stress concept. This medium clear blue flight is measured from the ridge of the screw to the joint/link between the clear blue flight and the medium shaft. Shaft length: 27.5mmThis standard shape clear blue flight and long clear blue stem incorporates the innovative Condor Zero Stress concept. This long clear blue flight is measured from the ridge of the screw to the joint/link between the clear blue flight and the long shaft. Shaft length: 33.5mmCondor Dart Flights - Zero Stress - Standard - Clear Blue - ShortCondor Dart Flights - Zero Stress - Standard - Clear Blue - MediumCondor Dart Flights - Zero Stress - Standard - Clear Blue - Long