2219 the diameter of the shaft is.22 and the thickness of the wall is .19 thick. As far as weight, if ya mean how much does the shaft weigh, go to Easton and check out there chatrs, if you are talking spine, well they spine well over 85#s and if ya spine them using 13" centers as ya do for wood arrows they are close to 100, I believe. If ya want to shoot carbon out of your bow I could get ya close but I need to know what type of bow, LB or curve is it cut past center and the #age at your draw. Shawn