To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzes reviews to verify trustworthiness.
I got these pucks for a small air hockey set with a battery powered fan. They float surprisingly well, there's definitely a difference from when the fan is switched off. It's a good product and reasonably priced.