The PRS X-Change Torque Tune Kit is a spacer system that allows you to torque tune your R7 Arrow Rest. This Precision Rest Series (PRS) system utilizes 0.3′; 0.4′; and 0.5” spacers that can be exchanged and stacked in combination to move the R7 arrow rest further from the bow riser to optimize forgiveness in the bow system. *Compatible with the R7 arrow rest only. [Patent Pending]