Comparison : Item # D411510322, 4 Flute (Taper Shank) HSS Core Drills, Fractional Sizes (Imported)
Item # D411510342, 4 Flute (Taper Shank) HSS Core Drills, Fractional Sizes (Imported)
Item # D411510362, 4 Flute (Taper Shank) HSS Core Drills, Fractional Sizes (Imported)
Item # D411510382, 4 Flute (Taper Shank) HSS Core Drills, Fractional Sizes (Imported)
Item # D411510402, 4 Flute (Taper Shank) HSS Core Drills, Fractional Sizes (Imported)