New Tour Lock Opti-Vibe 1-50gram Internal Shaft weight and 12gram Counter weight (Multi-weight) Combo. For the price of ONE You can use this weight in Three different setups. 1.) You can use just the Opti-Vibe for a 50gram Putter or Driver Weight.(Needs TourLock Dual Tool to adjust the weight up or down the shaft) 2.) You can use the 12gram Counter weight separately in either Irons/Hybrid/Fairway 3.) Combining both weights turns into a 58gram Counter Core Putter weight. Now you have the advantage and ability to change weights and experiment with your clubs. Proven Technology for Amateurs and Professional Golfers. Designed to Improve Golf Clubs to your preferred performance. (You will be surprised to what these weights can do) Counter Balancing your clubs made easier with the new Tour Lock Pro Technology. The 50gram 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 please don't hesitate to email us. Thank You for Visiting!!!