Our latest technology for drivers, the Shaft Stabilizer™, significantly improves swing consistency by optimizing the Moment Of Inertia (MOI) of the butt end of the club to maximize inertial stability. In other words, the improved MOI increases the controllability of the club. Ninety six percent (96.8%) of golfers fit have experienced improved swing consistency equating to more ball strikes with the club head’s sweet spot. The Shaft Stabilizer™ is designed to enhance “FEEL”, engineered to maximize efficiency, Tour tested for performance, and is made in the USA. The Shaft Stabilizer™ Driver Kit includes the following: 1 - SS High Weight 1 - SS Low Weight 1 - Removal Tool and Allen Wrench 1 - Grip Cutter w/blue handle Installation Instructions