California Proposition 65: This product contains a chemical known to the State of California to cause birth defects or other reproductive harm. Pulley Tap, Thread Size 1/4 In. -20, UNC, Overall Length 8 in, High Speed Steel, Bright (Uncoated), Right Hand, Thread Length 1 in, 75 Percent Thread Drill Size #7, Thread Limit H3, Class of Fit 3B, Number of Flutes 4