SKLZ Refiner Iron Hinged Training Club Dual hinged training clubs are reliable and effective training tools for pros and amateurs to hone their swing with. The Refiner Iron's two way hinged club shaft give you instant feedback on tempo and swing plane by showing breaks in the swing at home or hitting balls at the range. Fully adjustable, golfers can change the tension of the hinge. Features SKLZ Refiner Iron Hinged Training Club 8226 Patented, two way adjustable hinged 6 Iron 8226 Golf swing flaws are immediately exposed by a break in the hinge 8226 Engineered to hit golf balls and teach a smooth, even tempo golf swing 8226 Can be used at the range, home, or office, any time of the year 8226 Promotes better golf ball contact for straighter, longer iron shots. 8226 Patented see through grip graphics for ideal hand placement 8226 Includes adjustment keydivot tool