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 analyses reviews to verify trustworthiness.
This was awful. The provided screws did not fit into their respective anchors; careful driving couldn't get the screws in without stripping the heads more than drive ng the screw. Attempts to back the screw out just pulled out the wall anchor, leaving a huge gaping hole.