Project X HZRDUS Black Driver Shaft
The Project X brand is a flagship in the golf shaft business. The brand started as an unstepped steel shaft and has morphed into carbon fiber driver and hybrid shafts. This shaft, like the Project X loading zone that came before it is hand made in the US under tight quality control processes.
The product information from True Temper tells us the shaft has a firmer midsection than the Loading Zone model. And indeed it does, lets look at the numbers: