First, start playing each other, it does not have any standardized. But the current developer, use the plays by the principle of Dynamics by the end of the tapered ball more Aero to shake/rotate.
When he first started playing together It does not define a standard at all. But now has developed to be played by the Aero Dynamics by more tapered tip. To be able to spin / rotate better.
First start, it does not determine the size of a standard. But the present has developed make use of play with the principle Aero Dynamics by the ball more slender to spin / turn better.