5/8 x 4″ Round Cobalt Tool Bit • Ground HSS or Cobalt Available • High speed steel (HSS) provides good wear resistance and can be used in general purpose applications for both ferrous and nonferrous materials List Number TO07840 Substrate Cobalt Package Quantity 1 Length 4" Style Round Diameter 5/8 SKU: TO07840 Category: Tool Bits Related products 1/2 x 4″ Square HSS Tool Bit Item #: TO01640 5/8 x 8″ Square HSS Tool Bit Item #: TO01748 3/16 x 2-1/2 Square HSS Tool Bit Item #: TO01125