Extreme Shrink Fletch Green/White 2 in. Vanes 6 pk.. Designed for carbon or aluminum arrow shafts 17/64" to 24/64" diameter the Extreme Shrink Fletch can be used to repair old arrows or fletch new ones. Simply install on the shaft and submerge in hot water to shrink the tubing to the shaft. Then simply add a feather or nock to the tip of the arrow slide the VaporLock onto the tubing make the necessary adjustments and then submerge the shaft in cold water to shrink the tubing to the shaft. The easiest way to fletch any arrow shaft use the Extreme Shrink Fletch. Package Contents: Extreme Shrink Fletch Extreme SF2-GN6: Shrink Fletch Green/White 2 in. Vanes 6 pk.