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.
My window crank broke so I purchased these. The material is cast aluminum so we'll see how long they'll last. It would be better to get a steel crank handle for structural integrity but they cost more. so far, so good