Spiral Point Tap, Thread Size 1/4 In.-20, UNC, Overall Length 2 1/2 in, High Speed Steel, Black Oxide, Right Hand, Thread Length 1 in, Thread Limit H3, Class of Fit 3B, Number of Flutes 2
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.
