House of Forged BLACK DIAMOND Shaft This is our newest, high-end, ultra-lightweight standard driver shaft, which is offered in A/R/S/X/XX-flexes. These unique, wide-body, thin-walled shafts incorporate the full range of the newest MATRIX technologies with the Senior-flex running just 47-grams, the Regular and Stiff at 50-grams, the X-flex at 53-grams and the super-strong XX-flex at just 54-gram weight. Despite their ultra-light weight, these shafts are very strong and they will play-to-flex. The have received instant popularity among older golfers, as well as with golfers who are looking for tour shaft performance at a lighter weight. You can expect higher ball speeds with a boring ball-flight and a ball that seems to go on forever from these shafts. Products Code:HOF0036 Products Name:House of Forged BLACK DIAMOND Shaft.