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 gave it 4 stars as the edge did snag on mu sweatshirt when I first used it. I put electrical tape around the edge to stop the raw metal edge from snaggin the material. Seemed to have work much better!