HHIP 3900-0250 Precision Hand Tapper Precision ground work table and spindle to high accuracy. Assures straight perpendicular tapped holes. Rigid structure made of high grade tool steel. Precision ground work table and spindle to high accuracy. 9 tap adapters included: #6, #8, #10, 1/4, 5/16, 3/8, 7/16, 1/2 & 5/8" . Equipped with tap guide.