Amazon calculates a product’s star ratings based on a machine learned model instead of a raw data average. The model takes into account factors including the age of a rating, whether the ratings are from verified purchasers, and factors that establish reviewer trustworthiness.
Bought this to finish an exhaust cut on one of my projects. This did the job in a few minutes. With a hacksaw I could have spent hours. There is nothing like having the right tool for a given job. This cutter is of the highest quality and should last a lifetime.