What Is the Difference Between a .580 and .600 Golf Grip?
When buying a golf grip, you may see .580 or .600 listed in the specifications. These numbers can be confusing. They do not describe the outside grip size you hold. They refer to the inside core size of the grip.
The Short Answer
A .580 core grip has a smaller inside opening than a .600 core grip. Both can be Standard grips. For example, a .580 grip can be a Standard size grip, and a .600 grip can also be a Standard size grip. So, .580 does not automatically mean Undersize, and .600 does not automatically mean Standard.
Why Does Core Size Matter?
The grip is installed over the butt end of the shaft. The final feel depends on the relationship between Grip Core Size + Shaft Butt Diameter + Tape Build-Up. Golf Pride explains that a smaller core installed on a larger shaft can produce a thicker final feel. For example, a .580 Standard grip installed on a .600 shaft will feel thicker than a .600 Standard grip installed on the same .600 shaft.
A Simple Example
On the same .600 shaft, a .600 core will be closer to the grip's intended installed size, while a .580 core stretches more during installation and will produce a thicker feel. However, the exact final size can vary depending on the grip design, actual shaft dimensions and tape used.
How Should You Choose?
Do not choose between .580 and .600 simply because one number is larger. Check the outside grip size (Undersize, Standard, Midsize or Jumbo), grip core size (such as .580 or .600), shaft butt diameter, and tape build-up together.
Bottom Line
.580 and .600 describe the grip's inside core size, not the outside grip size. Both can be Standard grips. For the final fit, consider the grip's outside size, core size, shaft butt diameter and tape build-up together.