All the details are here
http://www.starrflight.com/. But with me my arrows fly a bit better especially in the wind. It takes about five seconds to put one on so no more downtime fletching/refletching. The only negatives I can see are fobs can get torn up if you are stacking arrows on a target but you have the same problem with fletching. And they look different but that doesn't really bother me.
