OnCourt OffCourt Tennis Forehand Rotator - Improve Power on Forehands / For All Ages / Fully Adjustable IMPROVED FOREHAND: The Forehand Rotator guides all levels of players to an improved "feel" for the correct body rotation on the forehand groundstroke. ADJUSTABLE: The Forehand Rotator is fully adjustable. INSTRUCTIONS INCLUDED: Instructions are included. Additional tips can be found on website. PROFESSIONALLY MADE: All our products are designed by Tennis pros with years of experience and expertise. ONCOURT OFFCOURT: We are the leading creative resource for youth tennis, training aids, court equipment and ball machines. Over 10 million players have improved using our products in over 100 countries.