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.
Product looked good, but the first screw I put in broke in half as I was screwing it in gently. I drilled a pilot hole first, but the slightest resistance caused the screw to break. Now I’m left with trying to remove a broken screw shaft from my guitar....not an way task.