Pechauer Kielwood Shafts are crafted from torrefied hard-rock Canadian Maple, which undergoes a process that eliminates sugar and moisture. The end result is a stiffer shaft with increased feedback and reduced deflection compared to a traditional Maple shaft. With an approximate weight range of 4.2-4.7 oz, these shafts are compatible with models P10, P11, P14, P15, and P16, as well as several past models. Specifically designed to fit with the Pechauer Speed Joint pin. The joint size on these is .850 and available in multiple shaft diameter options.