I say "Super" because these plates are 50% thicker than the mag plates that come pre-packaged with our magnetic phone holder. There is a significant increase in holding power when using these plates, so if you have a larger or heavier phone you may want to consider these. You get two plates with 3M peel-n-stick, one round 1.6" in diameter and a second plate 2.1" by 2.7".