Allied Machine & Engineering T-A Pro™ Replaceable Drill Holder, Straight Flute, Series: 1 Series, Drilling Capacity: 0.696 to 0.96 in, 4-1/8 in Drill Depth, 1 in Shank Diameter, 2.28 in Shank Length, Flanged Shank, 5.763 in Drill Body Length to Flange, 7.903 in Overall Length, 5.623 in Drill Body Length, 5xD Drill Depth by Diameter Ratio