Tony, I find them more forgiving. Varying weight doesn't seem to make as much difference and I shoot the same arrow in several different weight bows. It can be difficult to order or find a starting place because of the language problem and various way of measuring things in China though. It is said the natural taper makes them more tolerant. You put the point on the big end for a natural Front of center shaft. Well dried they are tough. I cut self nocks in them and it takes a lot of filing and sanding to get a good snap on fit. The ears on the nocks are very small for my light weight bows but none have broke. I test fired them at 55 pounds and they check a little weaker than 600. all went well. >>---> Ken