Specification Brand : Tour Shop Fresno ExternallyAssignedProductIdentifier1 : 0708088452857 ExternallyAssignedProductIdentifier2 : 708088452857 ItemName : Tour Shop Fresno Project X LZ Steel Iron Shaft - .355 Taper Tip - Spine Marked (4 Iron, 6.0-120g) ItemTypeKeyword : golf-club-shafts ProductDescription : Project X LZ steel features proprietary Loading Zone Technology which produces maximum shaft load during the downswing for 7% greater energy transfer to the ball at impact for more distance. Loading Zone Technology is achieved through variable wall technology in the shaft's butt and tip sections and a reduced stiffness in the midsection. Golfers can not only feel the technology, but see it as well in the rapid, tapered steps out of the grip through the midsection of Project X LZ. ProductSiteLaunchDate : 2017-09-08T16:53:44.407Z UnspscCode : 49211600