19/32" Diameter 3/8" Reduced Shank High Speed Steel Drill Bit. Decimal Equivalent .5938 Flute Length 3" Overall Length 6" These reduced shank high speed steel drill bits expand the size range capacity of a portable drill chuck. They have a common flute and overall length for minimal adjustment during tool changes. Precision ground for a high degree of concentricity between shank and body diameter. Ideal for drilling low and medium tensile strength materials.