Check the listing for details. JumboMax JMX JumboFlat 17" Putter Grips. Condition: New. Listed at 29.99 USD. JumboMax JMX JumboFlat 17" Putter Grips Developed with Bryson DeChambeau. The JumboFlat 17 is for golfers that use the ArmLock putting style. It has a super-wide, flat surface and a patent-pending shape that was designed to fit the contour of the forearm so golfers can really lock it in. A Major Winner: Used By 2020 U.S. Open Champion Bryson DeChambeau.Eliminate Wrist Break: Has the widest profile of any ArmLock grip.Lays Perfectly Flat: Patent-pending tapered shape rests perfectly flat against your forearm.Fits The Fingers: Rounded section is formed to fit your fingers.Boost Feel: Poly-Tour™ outer provides optimal tackiness and texture. Terms of SalePlease Note: Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying.