Glass and Tile Drill Bit, 5/16 in, Diamond Tipped, Straight, Maximum Drilling Depth 3 1/4 in, Shank Diameter 1/4 in, Overall Length 3 15/16 in, Shank Length 3 15/16 in
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.
