Series 91 – The Duke


The Duke.

Inspired by Tour Player Ken Duke, this classic toe hang design is packed with performance. A favored style by feel players. U.L.B.P. (ultra-low balance point technology, makes this familiar shape a putting marvel).



All Sacks Parente putting instruments come with a premium cover, our exclusive ball mark and our 30 day performance guarantee.

The Sacks Parente Golf Series 91 putting instrument was inspired by the iconic putter shape one of PGA Tour Champions Tour player Ken Duke’s favorite putters.

The SPG Series 91 features a classic style with a clean, minimalist look favored by golfers of all skill levels.

While this putter may look classic, that’s where the history ends and Sacks Parente adds the cutting-edge performance enhancing technologies that make this a superior putting instrument. The Series 91 features 3 performance technologies: a patented Ultra-Low Balance Point technology, a Weight-Forward Center-of -Gravity (CG) design, and high MOI.

The high quality milled 303 stainless steel provides a soft responsive feel at impact. The patented Ultra-Low Balance Point (U.L.B.P.) creates a smooth putting stroke that naturally squares at impact without the need to manipulate the putter head.

On an off-center hit, the Weight-Forward CG provides a consistent roll and reduces skidding to make sure your ball gets to the cup.

The Series 91 “Duke” is fitted with 50 grams of tungsten in both the toe and the heel and all towards the front of the head.  An astounding 77% of the head weight is in the heel and toe.  The MOI of this head is almost 5000, which is unheard of for this iconic shape, and ensures that there is very little energy loss or face deflection on off-center hits.

If you are struggling on the greens, and want a more natural, athletic style of putting to make more putts, the Sacks Parente Golf Series 91 should be on your list.

Lots of performance technology in a classic design.

The Putter Shaft.
The engine that drives the ultra-low balance point.

Sacks Parente putter shafts are complex engineered products, produced exclusively using the highest grade resins and composite fibers on the market.

Nothing can explain the feel, the ball roll, the accuracy, the distance control.

The Grips.
Just the right amount of everything.

Our signature nano cellular technology grips are specifically designed and engineered as an essential component of ULBP technology

  • Ultra Low Balance Point
  • Weight Forward CG
  • Ultra High Physics Based MOI
  • Unsurpassed Ball Roll
  • Naturally Improves Your Stroke

Like all Sacks Parente putting instruments, the 66 has our patented ULTRA-LOW BALANCE POINT TECHNOLOGY and this putting instrument, like all our putters, will naturally IMPROVE your stroke and your score.


HandLeft Hand, Right Hand
Grip TypeFlat Grip, Pistol Grip, Round Grip
Shaft TypeSPG CFS
Shaft Length32 in., 33 in., 33.5 in., 34 in., 34.5 in., 35 in., 36 in.