POWERLAG PRO: Trains your hands to maximize club lag for power and consistency. Provides immediate feedback when your wrist is fully cocked. Develop a steady and powerful accelaration to impact. PowerLagPro will help you develop proper club lag in your swing, thus maximizing the club head speed for greater distance and accuracy. FLATWRIST PRO: Develop proper hand position before, at and post impact The flat lead arm wrist is vital to your golf swing. FlatWristPro will force you to maintain a flat lead wrist from the top of your swing, right through the impact zone.