Mine have been great up till now, with my old bow I had some older Gold Tips that I put thru heck. I hit trees, rocks missed targets and stuck em into treesand none of them cracked. These were abused and had no problems, these are two years old but kept inside in a cool house in their box. I won thema certificate for them at a banquet last year, but rifle hunted instead, so they sat until this Feb.I cant imagine graphite degrading in those conditions.