On Sale!! Tour Lock Opti-Vibe 10-12gram Internal Shaft weights. Improve 10 Golf Clubs in your Bag) Counter Balancing your clubs made easier with the new Tour Lock Pro Technology. These Internal shaft weights are adjustable weights that goes down the shaft of any club.This Technology gives you an advantage to fine tune your clubs in terms of your preferred feel, solidness of contact, Lag, Swing speed, and club head awareness. Proven to give you more club head feel, solid contact and faster swing speed. Amateur and Professional Golfers tested, improves the accuracy and feel of the club. Recommended for Fairway,Hybrid Irons, Regular Irons,Wedges. There?s about 20-30 different setups that you can try with each iron/Hybrid/Fairway. You can adjust the weight up or down the shaft depending on the desired feel.Adjustments can vary from centimeters to inches. This package includes: 10-12gram Opti-vibe 10-Black Grip Caps Installation Manual Immediate Noticeable Effect: 1.) Improves Distance 2.) Smoother Swing flow 3.) Solid Hit 4.) Less Misses/Playable misses 5.) Faster swing speed 6.) Really Good feel/More Confidence 7.)Helps with Accuracy 8.)More balanced feel Note:This package only contains the opti-vibe weights.No tools included. If you would like to adjust the weights, you have to purchase a Dual tool.Please check on my other listings. Shop with Confidence from a Highly Respected Seller.Fast Free Domestic Shipping and Money Back Guarantee!!!! For any questions please don't hesitate to email us. Thank You for Visiting!!!