On Sale!! Tour Lock Opti-Vibe Weight 1-150gram Internal Shaft weight (Heavy). Designed to Improve Putting strokes. (You will be surprised to what this weight can do) Recommended for putters that has heavy club head. More Balanced feel and steady strokes Counter Balancing your clubs made easier with the new Tour Lock Pro Technology. This Internal shaft weight is an adjustable weight 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, Steadiness of Stroke, and club head awareness. Proven to give you more club head feel, solid contact and Pendulum effect. Amateur and Professional Golfers tested, improves the accuracy and feel of the club. Recommended for Putters. Immediate Noticeable Effect: 1.) Improves Speed and Distance Control 2.) Smoother putting stroke 3.) Solid Head feel 4.) Less Misses/Playable misses 5.) Pendulum effect 6.) Really Good feel/More Confidence 7.) Better Control Note: You need the Tour Lock Pro Dual Tool to adjust the weights. If you need to purchase one Just add the Dual tool from our listings. Shop with Confidence from a Highly Respected Seller.Fast Shipping and Money Back Guarantee!!!! For questions just don't hesitate to email us. Thank You for Visiting!!!