Comfort is basically the only purpose of one. It doesnt help you with revs any, since if you think about it, most revs are produce by your middle finger, and the ring just helps to balance the ball and get that last little umph out of it.
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16 years and still going strong! 16 years old that is!
The names Warrior Princess, Xena..Warrior Princess
And why would I "saw" pins in half, THATS A WASTE OF PINS!