Any face that creates significantly more or less spin than a standard steel face or acts like a trampoline to "bounce" the ball a greater distance is not allowed. Modern clubheads are made from many materials, but the rules use a traditional steel face as a standard. And the volume of the clubhead can't be more than 460 cubic centimeters, with an allowed variance of 10 cubic centimeters. It can't be longer from heel to toe than 5 inches or taller from sole to crown than 2.8 inches. The head must be longer from heel to toe than from face to back. You can't have holes of any type in the clubhead – apart from the shaft's mounting hole, of course – and protrusions or depressions in the head's body must not extend onto the face. The driver's clubhead is where most manufacturers become experimental, so it's also regulated. A club's shaft length must be greater than 18 inches but not more than 48 inches. Lead tape may be used to adjust the swingweight as a concession to tradition.Īlthough the rules have been amended to allow adjustments to help with custom fitting, the rules prohibit club materials that move during use or can be easily changed during play. It's possible, however, to have a club without material added for a grip. For example, drivers need to be "traditional," with only have one head and one shaft. Drivers must conform to most of the same rules as the other clubs.
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