The Western 65776 is a genuine replacement part primarily used as a bearing, specifically a 0.750 ID Pillow Block bearing. It's designed for Western Pro Flo 2 and Fisher Speedcaster 2 tailgate spreaders, as well as some 1.25-yard Polycaster and Tornado models. This essential component ensures smooth and efficient operation of the spreader's moving parts, contributing to optimal material spreading performance.