This small standard shape Marble design flight and short stem incorporate the innovative Condor Zero Stress concept. The blue marble No.6 flight is measured from the ridge of the screw to the joint/link between the blue flight and the short stem. Shaft length: 21.5mmThis small standard shape Marble design flight and medium stem incorporate the innovative Condor Zero Stress concept. The blue marble No.6 flight is measured from the ridge of the screw to the joint/link between the blue flight and the medium stem. Shaft length: 27.5mmThis small standard shape Marble design flight and long stem incorporate the innovative Condor Zero Stress concept. The blue marble No.6 flight is measured from the ridge of the screw to the joint/link between the blue flight and the long stem. Shaft length: 33.5mm