Holtzman Engineering, Inc. manufactures a Golf Club Making Product, the RetroFit golf shaft adapter
Holtzman Engineering, Inc. manufactures a Golf Club Making Product, the Shaft-X 3.04 Shaft Extractor/Puller
Holtzman Engineering, Inc. also manufactures a Snow Skiing Product, the Hero Helper Ski Oscillation Damper
***Returns subject to a 15% restocking charge. No returns after 90 days and without prior authorization. ***
RetroFit Shaft Adapter for Callaway OptiFit
RetroFit is our patent pending golf shaft adapter which can be used to replace the Callaway OptiFit shaft adapter. It is designed to provide maximum rigidity in its connection to the head, even at extremely high swing speeds. The RetroFit is almost 6 grams lighter than the OptiFit which allows for a combination of lower swingweight, longer club lengths, and more discretionary head weight for improved flight control. The RetroFit's shaft socket bottom is 3/8" closer to the head than the socket of the OptiFit, and it is designed to be used without a ferrule.
The RetroFit is a four position shaft adapter. We offer an adapter having a socket drilled at a 0 degree skew from axial which is unmarked and provides a club with the head's nominal properties irrespective of the adapter's rotational position. To adjust the club's loft and lie angles, we offer an adapter having a socket which is drilled at a 1.5 degree skew from axial. thereby allowing for +/- 1.5 degree changes in these angles. The 1.5 degree RetroFit is marked for RIGHT HAND application. It can be used in a left hand club but the marks will be 180 degrees off; + is actually -, F is actually D, and vice versa. We offer the RetroFit in green and black.
We sell these in quantities of two and four, and you can mix-and-match, including color and 0 and 1.5 degree drilling. Indicate in the notes section your desired assortment. For larger quantities, contact us for a quote.
Shaft-X 3.04 is our patented golf shaft puller. The shaft is held in a vise using the supplied clamping cushion, and the extractor is placed between the vise and hosel and pushes on the hosel using a supplied slotted washer. After hosel heating, air pressure is applied and at 120 PSI, 700 pounds of extraction force "surrounds" the shaft, minimizing shaft bending, and the head is pushed off. This is an ideal extractor for all golf clubs, especially clubs with easily damaged graphite shafts.
Hero snow is a snow condition that is so perfect that you feel like a “hero”, able to perform any kind of skiing desired. Our new patent pending ski oscillation damper, Hero Helper, helps you be a better, faster skier, making any snow condition more like hero snow, improving ski stability and edge control. The damper reduces ski oscillation, providing approximately 100% more oscillation damping than is intrinsically present in the ski. The product is easily installed near the tip of each ski (tail installation is also possible), no holes to drill.
Our president, Mr. Holtzman, has been an inventor most of his life. He has been issued 24 patents in diverse fields such as electrical power distribution, carburetion, nitrous oxide delivery, golf clubmaking, skiing, and bowling ball balance. For over 25 years, Holtzman Engineering, Inc. has been producing innovative consumer products.
How to Purchase
Our Carburetion Products, Golf Club Making Products and Snow Ski Damper can be purchased through this site via PayPal If you do not have a PayPal account, you can still pay by clicking on the tab that says "Pay with a Credit or Debit Card". Call if you have questions about these products, (715) 617-8727.
For Nitrous Oxide Products, contact Straightline Performance at www.straightlineperformance.com, firstname.lastname@example.org or (651) 466-0212.
For Holtzman Bowling Ball Scale, contact Jayhawk Bowling at www.shop.jayhawkbowling.com, email@example.com or (785) 842-3237.
Holtzman Engineering - electrical power distribution; carburetion products: ATACC, Tempa Flow, and CV Slide Springs; nitrous oxide delivery; golf clubmaking products: Shaft Extractor/Puller, Frequency and Flat Line Oscillation (Flo) Plane Shaft Analyzer and the Holtzman Loft and Lie Gauge; Snow Skiing Helper; and the Holtzman bowling ball balance scale.