MARTIN HALL 2008 PGA TEACHER OF THE YEAR presents his favorite swing training aid for learning the swing plane and maximizing distance. The SMART STICK utilizes green lasers and an innovative wrist bar that will teach you the flat left wrist at IMPACT, how to fully cock your wrist to create the angles for maximum power, as well as how to maintain club head lag which is required to deliver a powerfull strike.
Exc from Company's website
