This is a very good centre tear indeed. You get your glimpse quickly and very cleanly. You get a PDF
with some excellent illustration and several short videos are included to demonstrate the tear. I
was a little baffled util I looked at the videos then it fell in place immediately. Its actually
very simple and natural. Also the glimpse you do get is about 50% of the card - which is a great
help. All in all 5 out of 5 stars - this is the one I will be using