I was looking @ my daughters arrows & her tips on her Gold tip ultra light 600 fits perfectly on my ST.Epic 340's I have been looking @ getting some field points for these arrows. I called Easton & they said use the 9/32 but it is a little small for the 340's so I looked @ the 11/32 & the 11/32 they dont fit that well either there slightly big in diameter. So I put a call in to the shop up in Deer Park Wa to see what the size could not get thru I will call later. I will let every one know as soon as I find out. First arrow is my arrow. The second is her arrow. The tip is 100 gr. For some reason I can not get pics up right now maybe later.