Irwin Countersink *Material: High Speed Steel *Shank Type: Round Shank *Drill Bit Diameter: 5/8 in. *Dril Bit Length: 1-3/4 *Product Type: Countersink *Shank Diameter: 1/4 in. *Flute Length: 7/16 in. Precision ground 82                  d egree tip for                            c ountersinking most                       m achinable metals, wood or      p lastic *High speed steel                 f or increased durability*
       I ncludes a black oxide               f inish for added corrosion
           r esistance * Five flute                   d esign reduces vibration for              s moother drilling and                     e xtended life * Fits all                  h andheldand stationary
      d rills *Discovery ACC, NBR, SUP