This is a brand-new, factory-sealed Pro Boat PRB286007 Replacement Propeller Strut. This high-performance hardware assembly serves as the critical bearing mount structure that holds your prop shaft in precise straight-line alignment. It allows the flex shaft to rotate completely smooth under heavy throttle loads. Manufactured strictly to original factory specifications, it is the ideal drop-in fix to repair a bent, misaligned, or high-friction rear drive assembly on your high-speed marine layout.