Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
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 analyzed reviews to verify trustworthiness.
My review may not apply to most, because of our precise requirements. We needed a forstner bit, to create holes for a product of ours: 1PUCK - tiny-aperture LED recessed floor/soffit/deck light. The bit creates very beautiful, clean holes, but are about a half a millimeter too large.