Amazon: Customer reviews: KoMo Hand Grinder
Customer reviews 3.3 out of 5 stars 3.3 out of 5 8 global ratings KoMo Hand Grinder byKOMO Write a review How are ratings calculated? 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.