If I remember correctly, the numbers on an Easton aluminum shaft are designated by shaft diameter (ID or OD?) and wall thickness. I can't remember the formula....any help?
thanks
Kevin
trying to figure sizing for an external foot w/ insert for wood arrows...
The first two digits are OD in 64ths of an inch, the second two are wall thickness in thousandths of an inch.
Killdeer :wavey:
many thanks...time to get out the slide rule...or at least the Big Chief tablet....