Description   The JumboMax ST/1.3 Putter Grip™ is the largest putter grip we make. With a diameter of 1.3-inches and a straight, non-tapered profile, the ST/1.3 maximizes surface area to help golfers reduce their grip pressure and stabilize their hands. While the smaller ST/1.2™ has a rounded-back design, the ST/1.3 offers golfers a more square shape that helps fill up their hands and aids in consistent hand placement. WHAT BRYSON SAYS “The ST/1.3 is essentially squeeze-proof, which is what a lot of golfers need with the putter — especially when there’s something on the line. I can’t imagine anyone wanting a standard-length putter grip larger than this. The ST/1.3 pushes putter grip size to the limit, but it doesn’t go overboard.” Grip Features STANDARD LENGTH DIAMETER: 1.3 INCHES WEIGHT: 86 GRAMS Reduce Tension: Straight, non-tapered profile promotes a tension-free putting stroke. Maximum Consistency: Jumbo sizing offers maximum stability during the stroke. Boost Feel: TargetTac™ Texture delivers improved tackiness and feedback. Twist-Resistant StabilityCore™: Offers playability in a variety of weather conditions. Conforms with USGA Rules.