We recommend Glasforms Filament Wound Epoxy Tubing (FWET) for use in large kites that require a flexible, durable frame such as Deltas, Rokkakus, Box Kites or Dimensional Kites. Goodwinds' FWET fiberglass tubes have alternating longitudinal and wrapped layers resulting in a lightweight composite of high tensile, compressive and flexural strength. FWET is great for Sport Kite frames when cost or durability is an issue. The FL505's and FL602's are popular with Live Action Role Playing groups (LARP) who use them for constructing swords used in battle games.