Replacing the arms involves removing the pin that connects the arms to the base and using the pin to attach the new arms. These will NOT work on any tool with a blue base.
For any E-Z fletch with a green base
Easily swapped out with removable pins
Accomodates vanes/feathers up to 5″ long
Specify 4 degree Offset, Straight, Right Helical or Left Helical