7-Iron for Golf Swing Practice (Roger King Swing Doctor) This practice iron allows you to feel the flex of the shaft while developing an ideal swing rhythm without tension. A popular training aid widely used by beginners to advanced players! You can also hit actual balls, making it perfect for checking your swing. By practicing with this Swing Doctor, you'll naturally develop a "pro-like swing" that utilizes body rotation. ✨Key Points✨ ・Develops a swing that uses hip rotation ・Increases distance + improves accuracy ・Leads to score improvement!