Why Can't We Start With a Fast Bat?

Why do we need different blades and rubber? Why we can't start with a higher topspin or power?

Can I buy Pingskills Touch Vega Pro Bat for my second Bat? 

Hi Kritpol,

It is important to start with something that you can control well.  Otherwise you are too focused on getting the ball slower and you won't be able to play your strokes correctly.

The Touch with Vega Pro would be better as a third bat at least.