The only ones I have ever seen were already fletched with the standard 4" Duravanes. I use a Whisker Biscuit and didn't have any wobble issues. And I think they had the inserts already glued in with the shaft at either 29" or 30" - longer thanwhat I would have considered ideal, but still workable. I always take the finished arrow and put it in a lathe - make a light face cut across the front of the insert.