The ShaftLab shaft recommendations are based on a fundamental principle - the more you bend or deflect a golf shaft during the down swing, the stiffer the shaft you need for optimum performance. This is the primary factor among several Shaft Lab uses in its calculations.

ShaftLab recommends the optimum shaft for you to:

• maximize repeatability of impact, and
• maximize distance

ShaftLab is not judgmental about your ability. Most observable aspects of a profile are not necessarily good or bad. ShaftLab merely recommends the best shaft for your swing.

There are three main categories: composite shafts, steel shafts, and shafts of special materials or design. If a category has two models listed, the first is a standard weight shaft, while the second is a light weight model. Choosing a shaft from the list involves many potential factors, such as:

• Preference for materials
• Head design (parallel or tapered)
• Desired swing weight
• Desired 'feel'
• Desired trajectory
• Price
• Availability of products

Also, standard fitting practices will still apply. If a golfer's length requirements are extreme, a shaft with a nominal flex other than the recommended one may be used and trimmed to produce the recommended flex.