The Pechauer Kielwood JP Series Shaft is crafted from torrefied hard-rock Canadian Maple, a process that removes sugar and moisture for a stiffer shaft with improved feedback and lower deflection. Weighing in at approximately 4.2-4.7 oz, it is specifically designed for use with Pechauer Speed Joint pins and has a joint size of .850. Multiple shaft diameter options are available.Fits JP Series models 2001-Present.