Shape: Standard/Kite/TearDrop Colors: RED/YELLOW/BLUE/GREEN Size: Measured from the edge of the screw to the joint between the flight and shaft. Length with pawl: A-15mm/B-18.8mm/D-24.8mm/E-29.5mm/F-33.3mm Length without pawl: A-17.3mm/B-21.1mm/D-27.1mm/E-31.8mm/F-35.6mm Precision molded grippy stem help to reduce dart "slip" and thereby increase scoring opportunities. KROU Pawl, keep flight in perfect angle and well protected, help darts fly more stable and truer this pawl could be removed to get longer flights. KRAU Cap, locks flights in place to avoid flights fall off and enhance the shaft life, reduce deflection, and increase scoring. Built-in carbon rod to strengthen the screw thread, keep away from the screws broken. Built-in spring to tighten the shaft to barrel, avoid screw loosen in dart games. This AK6 Shaft is compatible with all TERO AK4 flights.