I have an extra set of SW-X that came with my V3X, but I cannot use them. The bow was new and they have never been used. E 28″ Draw 54008A 60# 85% Lett-Off. I checked with Mathews technical support and they are interchangeable with the 29 or 33” axle-to-axle bows. Asking $50. Sent from my Lone Wolf treestand using Bowhunting.com Forums