You can check all the specs on all the arrows at www.goldtip.com.

If you are looking for a really BIG arrow then take a look at their new 30 X. This one is 26/64".

Me, I shoot light weight so can't handle the gr/inch for 3D, but most likely I'll take a serious look at the X-Cutter Pro's. Probably end up the 22 Series Pro's for hunting.