Aquarian Drumheads PF-A Performance II Tom Pack 10, 12, 14-inch

Ok... So you've had issues in the past, up to 5 years ago, why is the add still unchanged?. And the question remains, is it 3 heads or 4.

Are these single or double ply..?

How many heads comes with this pack? Its three or four?

Hello, is this 6 heads or 1 head or 2 heads per diameter for the price? Thanks