DynaStar's unique design has eliminated shaft tops. The shafts are tucked safely inside the flight, protecting them from incoming darts. Durability - the same design feature that helps improve your game also reduces wear and tear. Add to this a high strength thermal plastic and you have the longest lasting flights and shafts sold today. Easy Installation - simply slide the shaft into the flight and snap into place. In just seconds you're ready to compete. DynaStar shafts are available in 2 styles, 3 lengths and your choice of plastic or aluminum.