1/2 x 4″ Round HSS 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 TO02740 Substrate HSS Package Quantity 1 Length 4" Style Round Diameter 1/2 SKU: TO02740 Category: Tool Bits Related products 1/4 x 4″ Square HSS Tool Bit Item #: TO01227 3/4 x 8″ Square HSS Tool Bit Item #: TO01852 1/2 x 6″ Square HSS Tool Bit Item #: TO01642