I have a Schon BW1 and a custom jacoby. for the jacoby I have a Z2 shaft and an edge hybrid. The schon came with a standard schon shaft, and I have a pre-cat 314 and another ld shaft with no name on it, all 5/16 x 14 piloted. it's all interchangeable. I might be a unique case, but all of my shafts fit on both butts.