1/4 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 TO07440 Substrate Cobalt Package Quantity 1 Length 4" Style Round Diameter 1/4 SKU: TO07440 Category: Tool Bits Related products 1/2 x 6″ Square HSS Tool Bit Item #: TO01642 1/4 x 4″ Square HSS Tool Bit Item #: TO01227 3/8 x 4″ Square HSS Tool Bit Item #: TO01432