Alfa Tools ST66567 20 x 1.50 mm HSS Metric Screw Thread Insert Tap

Screw Thread Insert Tap, For Size 20mm x 1.50 Helical Coil Thread Insert, Plug Style, High Speed Steel, Made in USA, Use 20.25mm Drill, 1 per Pack. Alfa Tools ST66567 20 x 1.50 mm HSS Metric Screw Thread Insert Tap